diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 3ad2b2965..748ac52ba 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -25,11 +25,6 @@ parameters:
 			count: 4
 			path: src/Propel/Common/Config/PropelConfiguration.php
 
-		-
-			message: "#^Access to an undefined property Propel\\\\Generator\\\\Model\\\\Table\\:\\:\\$isArchiveTable\\.$#"
-			count: 1
-			path: src/Propel/Generator/Behavior/Archivable/ArchivableBehavior.php
-
 		-
 			message: "#^Call to an undefined method Propel\\\\Generator\\\\Config\\\\GeneratorConfigInterface\\:\\:get\\(\\)\\.$#"
 			count: 1
@@ -40,6 +35,11 @@ parameters:
 			count: 1
 			path: src/Propel/Generator/Behavior/ConcreteInheritance/ConcreteInheritanceBehavior.php
 
+		-
+			message: "#^Parameter \\#1 \\$unique of method Propel\\\\Generator\\\\Model\\\\Table\\:\\:addUnique\\(\\) expects array\\|Propel\\\\Generator\\\\Model\\\\Unique, Propel\\\\Generator\\\\Model\\\\Index given\\.$#"
+			count: 1
+			path: src/Propel/Generator/Behavior/SyncedTable/TableSyncer.php
+
 		-
 			message: "#^Access to an undefined property Propel\\\\Generator\\\\Model\\\\Table\\:\\:\\$isVersionTable\\.$#"
 			count: 1
@@ -195,19 +195,9 @@ parameters:
 			count: 1
 			path: src/Propel/Generator/Manager/AbstractManager.php
 
-		-
-			message: "#^Strict comparison using \\=\\=\\= between int and null will always evaluate to false\\.$#"
-			count: 1
-			path: src/Propel/Generator/Model/Domain.php
-
-		-
-			message: "#^Strict comparison using \\=\\=\\= between array\\<Propel\\\\Generator\\\\Model\\\\ForeignKey\\> and null will always evaluate to false\\.$#"
-			count: 1
-			path: src/Propel/Generator/Model/Table.php
-
 		-
 			message: "#^Call to an undefined method Propel\\\\Generator\\\\Config\\\\GeneratorConfigInterface\\:\\:get\\(\\)\\.$#"
-			count: 2
+			count: 1
 			path: src/Propel/Generator/Platform/MysqlPlatform.php
 
 		-
@@ -380,11 +370,6 @@ parameters:
 			count: 1
 			path: src/Propel/Runtime/Collection/ObjectCombinationCollection.php
 
-		-
-			message: "#^Return type \\(Propel\\\\Runtime\\\\Collection\\\\OnDemandIterator\\) of method Propel\\\\Runtime\\\\Collection\\\\OnDemandCollection\\:\\:getIterator\\(\\) should be compatible with return type \\(Propel\\\\Runtime\\\\Collection\\\\CollectionIterator\\) of method Propel\\\\Runtime\\\\Collection\\\\Collection\\:\\:getIterator\\(\\)$#"
-			count: 1
-			path: src/Propel/Runtime/Collection/OnDemandCollection.php
-
 		-
 			message: "#^Call to an undefined method Propel\\\\Runtime\\\\Connection\\\\ConnectionWrapper\\:\\:getProfiler\\(\\)\\.$#"
 			count: 3
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
index b213fa1c3..4a44622d3 100644
--- a/psalm-baseline.xml
+++ b/psalm-baseline.xml
@@ -11,7 +11,7 @@
     </UndefinedPropertyAssignment>
   </file>
   <file src="src/Propel/Generator/Behavior/Versionable/VersionableBehavior.php">
-    <UndefinedPropertyAssignment occurrences="1">
+    <UndefinedPropertyAssignment occurrences="2">
       <code>$versionTable-&gt;isVersionTable</code>
     </UndefinedPropertyAssignment>
   </file>
diff --git a/src/Propel/Generator/Behavior/Archivable/ArchivableBehavior.php b/src/Propel/Generator/Behavior/Archivable/ArchivableBehavior.php
index c34548e00..8159c73c8 100644
--- a/src/Propel/Generator/Behavior/Archivable/ArchivableBehavior.php
+++ b/src/Propel/Generator/Behavior/Archivable/ArchivableBehavior.php
@@ -8,49 +8,39 @@
 
 namespace Propel\Generator\Behavior\Archivable;
 
+use Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior;
 use Propel\Generator\Builder\Om\AbstractOMBuilder;
 use Propel\Generator\Exception\InvalidArgumentException;
-use Propel\Generator\Exception\SchemaException;
-use Propel\Generator\Model\Behavior;
 use Propel\Generator\Model\Column;
-use Propel\Generator\Model\ForeignKey;
-use Propel\Generator\Model\Index;
 use Propel\Generator\Model\Table;
-use Propel\Generator\Platform\PgsqlPlatform;
-use Propel\Generator\Platform\PlatformInterface;
-use Propel\Generator\Platform\SqlitePlatform;
 
 /**
  * Keeps tracks of an ActiveRecord object, even after deletion
  *
  * @author Francois Zaninotto
  */
-class ArchivableBehavior extends Behavior
+class ArchivableBehavior extends SyncedTableBehavior
 {
     /**
-     * Default parameters value
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::DEFAULT_SYNCED_TABLE_SUFFIX
      *
-     * @var array<string, mixed>
+     * @var string DEFAULT_SYNCED_TABLE_SUFFIX
      */
-    protected $parameters = [
-        'archive_table' => '',
-        'archive_phpname' => null,
-        'archive_class' => '',
-        'sync' => 'false',
-        'inherit_foreign_key_relations' => 'false',
-        'inherit_foreign_key_constraints' => 'false',
-        'foreign_keys' => null,
-        'log_archived_at' => 'true',
-        'archived_at_column' => 'archived_at',
-        'archive_on_insert' => 'false',
-        'archive_on_update' => 'false',
-        'archive_on_delete' => 'true',
-    ];
+    protected const DEFAULT_SYNCED_TABLE_SUFFIX = '_archive';
 
     /**
-     * @var \Propel\Generator\Model\Table|null
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::PARAMETER_KEY_SYNCED_TABLE
+     *
+     * @var string
      */
-    protected $archiveTable;
+    public const PARAMETER_KEY_SYNCED_TABLE = 'archive_table';
+
+    /**
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::PARAMETER_KEY_SYNCED_PHPNAME
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNCED_PHPNAME = 'archive_phpname';
 
     /**
      * @var \Propel\Generator\Behavior\Archivable\ArchivableBehaviorObjectBuilderModifier|null
@@ -63,18 +53,29 @@ class ArchivableBehavior extends Behavior
     protected $queryBuilderModifier;
 
     /**
-     * @return void
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::getDefaultParameters()
+     *
+     * @return array
      */
-    public function modifyDatabase(): void
+    protected function getDefaultParameters(): array
     {
-        foreach ($this->getDatabase()->getTables() as $table) {
-            if ($table->hasBehavior($this->getId())) {
-                // don't add the same behavior twice
-                continue;
-            }
-            $b = clone $this;
-            $table->addBehavior($b);
-        }
+        return [
+            static::PARAMETER_KEY_SYNCED_TABLE => '',
+            static::PARAMETER_KEY_SYNCED_PHPNAME => null,
+            'archive_class' => '',
+            static::PARAMETER_KEY_SYNC => 'false',
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_RELATIONS => 'false',
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_CONSTRAINTS => 'false',
+            static::PARAMETER_KEY_FOREIGN_KEYS => null,
+            static::PARAMETER_KEY_SYNC_INDEXES => 'true',
+            static::PARAMETER_KEY_SYNC_UNIQUE_AS => null,
+            static::PARAMETER_KEY_EMPTY_ACCESSOR_COLUMNS => 'true',
+            'log_archived_at' => 'true',
+            'archived_at_column' => 'archived_at',
+            'archive_on_insert' => 'false',
+            'archive_on_update' => 'false',
+            'archive_on_delete' => 'true',
+        ];
     }
 
     /**
@@ -84,275 +85,40 @@ public function modifyDatabase(): void
      */
     public function modifyTable(): void
     {
-        if ($this->getParameter('archive_class') && $this->getParameter('archive_table')) {
+        if ($this->getParameter('archive_class') && $this->getParameter(static::PARAMETER_KEY_SYNCED_TABLE)) {
             throw new InvalidArgumentException('Please set only one of the two parameters "archive_class" and "archive_table".');
         }
         if (!$this->getParameter('archive_class')) {
-            $this->addArchiveTable();
-        }
-    }
-
-    /**
-     * @return string
-     */
-    protected function getArchiveTableName(): string
-    {
-        return $this->getParameter('archive_table') ?: ($this->getTable()->getOriginCommonName() . '_archive');
-    }
-
-    /**
-     * @return void
-     */
-    protected function addArchiveTable(): void
-    {
-        $table = $this->getTable();
-        $database = $table->getDatabase();
-        $archiveTableName = $this->getArchiveTableName();
-
-        $archiveTableExistsInSchema = $database->hasTable($archiveTableName);
-
-        $this->archiveTable = $archiveTableExistsInSchema ?
-            $database->getTable($archiveTableName) :
-            $this->createArchiveTable();
-
-        if ($archiveTableExistsInSchema && !$this->parameterHasValue('sync', 'true')) {
-            return;
-        }
-
-        $this->syncTables();
-    }
-
-    /**
-     * @return \Propel\Generator\Model\Table
-     */
-    protected function createArchiveTable(): Table
-    {
-        $sourceTable = $this->getTable();
-        $database = $sourceTable->getDatabase();
-
-        // create the version table
-        return $database->addTable([
-            'name' => $this->getArchiveTableName(),
-            'phpName' => $this->getParameter('archive_phpname'),
-            'package' => $sourceTable->getPackage(),
-            'schema' => $sourceTable->getSchema(),
-            'namespace' => $sourceTable->getNamespace() ? '\\' . $sourceTable->getNamespace() : null,
-            'identifierQuoting' => $sourceTable->isIdentifierQuotingEnabled(),
-        ]);
-    }
-
-    /**
-     * @return \Propel\Generator\Model\Table
-     */
-    protected function syncTables(): Table
-    {
-        $archiveTable = $this->getArchiveTable();
-        $sourceTable = $this->getTable();
-
-        $columns = $sourceTable->getColumns();
-        $this->syncColumns($archiveTable, $columns);
-
-        $this->addArchivedAtColumn($archiveTable);
-
-        $foreignKeys = $this->getParameter('foreign_keys');
-        if ($foreignKeys) {
-            foreach ($foreignKeys as $fkData) {
-                $this->createForeignKeyFromParameters($archiveTable, $fkData);
-            }
-        }
-
-        $inheritFkRelations = $this->parameterHasValue('inherit_foreign_key_relations', 'true');
-        $inheritFkConstraints = $this->parameterHasValue('inherit_foreign_key_constraints', 'true');
-        if ($inheritFkRelations || $inheritFkConstraints) {
-            $foreignKeys = $sourceTable->getForeignKeys();
-            $this->syncForeignKeys($archiveTable, $foreignKeys, $inheritFkConstraints);
-        }
-
-        $indexes = $sourceTable->getIndices();
-        $platform = $sourceTable->getDatabase()->getPlatform();
-        $renameIndexes = $this->isDistinctiveIndexNameRequired($platform);
-        $this->syncIndexes($archiveTable, $indexes, $renameIndexes);
-
-        $uniqueIndexes = $sourceTable->getUnices();
-        $this->syncUniqueIndexes($archiveTable, $uniqueIndexes);
-
-        $behaviors = $sourceTable->getDatabase()->getBehaviors();
-        $this->reapplyBehaviors($behaviors);
-
-        return $archiveTable;
-    }
-
-    /**
-     * @param \Propel\Generator\Model\Table $archiveTable
-     * @param array<\Propel\Generator\Model\Column> $columns
-     *
-     * @return void
-     */
-    protected function syncColumns(Table $archiveTable, array $columns)
-    {
-        foreach ($columns as $sourceColumn) {
-            if ($archiveTable->hasColumn($sourceColumn)) {
-                continue;
-            }
-            $archiveColumn = clone $sourceColumn;
-            $archiveColumn->clearReferrers();
-            $archiveColumn->setAutoIncrement(false);
-            $archiveTable->addColumn($archiveColumn);
+            parent::modifyTable();
         }
     }
 
     /**
-     * @param \Propel\Generator\Model\Table $archiveTable
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param bool $tableExistsInSchema
      *
      * @return void
      */
-    protected function addArchivedAtColumn(Table $archiveTable)
+    public function addTableElements(Table $syncedTable, $tableExistsInSchema): void
     {
-        if (!$this->parameterHasValue('log_archived_at', 'true')) {
-            return;
-        }
-        $columnName = $this->getParameter('archived_at_column');
-        if ($archiveTable->hasColumn($columnName)) {
-            return;
-        }
-        $archiveTable->addColumn([
-            'name' => $columnName,
-            'type' => 'TIMESTAMP',
-        ]);
+        parent::addTableElements($syncedTable, $tableExistsInSchema);
+        $this->addCustomColumnsToSyncedTable($syncedTable);
     }
 
     /**
-     * @param \Propel\Generator\Model\Table $archiveTable
-     * @param array<\Propel\Generator\Model\ForeignKey> $foreignKeys
-     * @param bool $inheritConstraints
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::addCustomColumnsToSyncedTable()
      *
-     * @return void
-     */
-    protected function syncForeignKeys(Table $archiveTable, array $foreignKeys, bool $inheritConstraints)
-    {
-        foreach ($foreignKeys as $foreignKey) {
-            if ($archiveTable->containsForeignKeyWithSameName($foreignKey)) {
-                continue;
-            }
-            $copiedForeignKey = clone $foreignKey;
-            $copiedForeignKey->setSkipSql(!$inheritConstraints);
-            $archiveTable->addForeignKey($copiedForeignKey);
-        }
-    }
-
-    /**
-     * @param \Propel\Generator\Model\Table $archiveTable
-     * @param array<\Propel\Generator\Model\Index> $indexes
-     * @param bool $rename
+     * @param \Propel\Generator\Model\Table $syncedTable
      *
      * @return void
      */
-    protected function syncIndexes(Table $archiveTable, array $indexes, bool $rename)
+    protected function addCustomColumnsToSyncedTable(Table $syncedTable)
     {
-        foreach ($indexes as $index) {
-            $copiedIndex = clone $index;
-            if ($rename) {
-                // by removing the name, Propel will generate a unique name based on table and columns
-                $copiedIndex->setName(null);
-            }
-            if ($archiveTable->hasIndex($index->getName())) {
-                continue;
-            }
-            $archiveTable->addIndex($copiedIndex);
+        if ($this->parameterHasValue('log_archived_at', 'true')) {
+            $this->addColumnFromParameterIfNotExists($syncedTable, 'archived_at_column', ['type' => 'TIMESTAMP']);
         }
     }
 
-    /**
-     * Create regular indexes from unique indexes on the given archive table.
-     *
-     * The archive table cannot use unique indexes, as even unique data on the
-     * source table can be archived several times.
-     *
-     * @param \Propel\Generator\Model\Table $archiveTable
-     * @param array<\Propel\Generator\Model\Unique> $uniqueIndexes
-     *
-     * @return void
-     */
-    protected function syncUniqueIndexes(Table $archiveTable, array $uniqueIndexes)
-    {
-        foreach ($uniqueIndexes as $unique) {
-            $index = new Index();
-            $index->setTable($archiveTable);
-            foreach ($unique->getColumns() as $columnName) {
-                $columnDef = [
-                    'name' => $columnName,
-                    'size' => $unique->getColumnSize($columnName),
-                ];
-                $index->addColumn($columnDef);
-            }
-
-            if ($archiveTable->hasIndex($index->getName())) {
-                continue;
-            }
-            $archiveTable->addIndex($index);
-        }
-    }
-
-    /**
-     * @param array $behaviors
-     *
-     * @return void
-     */
-    protected function reapplyBehaviors(array $behaviors)
-    {
-        foreach ($behaviors as $behavior) {
-            if ($behavior instanceof ArchivableBehavior) {
-                continue;
-            }
-            $behavior->modifyDatabase();
-        }
-    }
-
-    /**
-     * @psalm-param array{name?: string, localColumn: string, foreignTable: string, foreignColumn: string, relationOnly?: string} $fkParameterData
-     *
-     * @param \Propel\Generator\Model\Table $table
-     * @param array $fkParameterData
-     *
-     * @throws \Propel\Generator\Exception\SchemaException
-     *
-     * @return void
-     */
-    protected function createForeignKeyFromParameters(Table $table, array $fkParameterData): void
-    {
-        if (
-            empty($fkParameterData['localColumn']) ||
-            empty($fkParameterData['foreignColumn'])
-        ) {
-            $tableName = $this->table->getName();
-
-            throw new SchemaException("Table `$tableName`: Archivable behavior misses foreign key parameters. Please supply `localColumn`, `foreignTable` and `foreignColumn` for every entry");
-        }
-
-        $fk = new ForeignKey($fkParameterData['name'] ?? null);
-        $fk->addReference($fkParameterData['localColumn'], $fkParameterData['foreignColumn']);
-        $table->addForeignKey($fk);
-        $fk->loadMapping($fkParameterData);
-    }
-
-    /**
-     * @param \Propel\Generator\Platform\PlatformInterface|null $platform
-     *
-     * @return bool
-     */
-    protected function isDistinctiveIndexNameRequired(?PlatformInterface $platform): bool
-    {
-        return $platform instanceof PgsqlPlatform || $platform instanceof SqlitePlatform;
-    }
-
-    /**
-     * @return \Propel\Generator\Model\Table|null
-     */
-    public function getArchiveTable(): ?Table
-    {
-        return $this->archiveTable;
-    }
-
     /**
      * @param \Propel\Generator\Builder\Om\AbstractOMBuilder $builder
      *
@@ -364,7 +130,7 @@ public function getArchiveTablePhpName(AbstractOMBuilder $builder): string
             return $this->getParameter('archive_class');
         }
 
-        $archiveTable = $this->getArchiveTable();
+        $archiveTable = $this->getSyncedTable();
         $tableStub = $builder->getNewStubObjectBuilder($archiveTable);
 
         return $builder->getClassNameFromBuilder($tableStub);
@@ -381,7 +147,7 @@ public function getArchiveTableQueryName(AbstractOMBuilder $builder): string
             return $this->getParameter('archive_class') . 'Query';
         }
 
-        return $builder->getClassNameFromBuilder($builder->getNewStubQueryBuilder($this->getArchiveTable()));
+        return $builder->getClassNameFromBuilder($builder->getNewStubQueryBuilder($this->getSyncedTable()));
     }
 
     /**
@@ -389,7 +155,7 @@ public function getArchiveTableQueryName(AbstractOMBuilder $builder): string
      */
     public function hasArchiveClass(): bool
     {
-        return $this->getParameter('archive_class') ? true : false;
+        return (bool)$this->getParameter('archive_class');
     }
 
     /**
@@ -397,8 +163,8 @@ public function hasArchiveClass(): bool
      */
     public function getArchivedAtColumn(): ?Column
     {
-        if ($this->getArchiveTable() && $this->getParameter('log_archived_at') === 'true') {
-            return $this->getArchiveTable()->getColumn($this->getParameter('archived_at_column'));
+        if ($this->getSyncedTable() && $this->getParameter('log_archived_at') === 'true') {
+            return $this->getSyncedTable()->getColumn($this->getParameter('archived_at_column'));
         }
 
         return null;
diff --git a/src/Propel/Generator/Behavior/SyncedTable/BehaviorWithParameterAccess.php b/src/Propel/Generator/Behavior/SyncedTable/BehaviorWithParameterAccess.php
new file mode 100644
index 000000000..5b40700c4
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/BehaviorWithParameterAccess.php
@@ -0,0 +1,120 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Exception\SchemaException;
+use Propel\Generator\Model\Behavior;
+
+abstract class BehaviorWithParameterAccess extends Behavior
+{
+    /**
+     * @param string $name
+     * @param string|null $defaultValue
+     *
+     * @return string|null
+     */
+    public function getParameter(string $name, ?string $defaultValue = null): ?string
+    {
+        $val = $this->parameters[$name] ?? null;
+
+        return is_string($val) ? trim($val) : $defaultValue; // means empty space (' ') cannot be a value, seems ok.
+    }
+
+    /**
+     * @param string $parameterName
+     * @param bool|null $defaultValue
+     *
+     * @return bool|null
+     */
+    public function getParameterBool(string $parameterName, ?bool $defaultValue = null): ?bool
+    {
+        $val = $this->getParameter($parameterName);
+
+        return !$val ? $defaultValue : in_array(strtolower($val), ['true', '1']);
+    }
+
+    /**
+     * @param string $parameterName
+     * @param int|null $defaultValue
+     *
+     * @throws \Propel\Generator\Exception\SchemaException
+     *
+     * @return int|null
+     */
+    public function getParameterInt(string $parameterName, ?int $defaultValue = null): ?int
+    {
+        $val = $this->getParameter($parameterName);
+        if ($val === null) {
+            return $defaultValue;
+        }
+        if (!is_numeric($val)) {
+            throw new SchemaException("Parameter $parameterName should be numeric, but is '$val'");
+        }
+
+        return (int)$val;
+    }
+
+    /**
+     * @param string $parameterName
+     * @param array|null $defaultValue
+     * @param callable|null $mapper
+     *
+     * @return array|null
+     */
+    public function getParameterCsv(string $parameterName, ?array $defaultValue = [], ?callable $mapper = null): ?array
+    {
+        $valString = $this->getParameter($parameterName);
+        if (!$valString) {
+            return $defaultValue;
+        }
+        $valList = $this->explodeCsv($valString);
+
+        return $mapper ? array_map($mapper, $valList) : $valList;
+    }
+
+    /**
+     * @param string $parameterName
+     * @param mixed $defaultValue
+     *
+     * @return mixed|true
+     */
+    public function getParameterTrueOrValue(string $parameterName, $defaultValue = null)
+    {
+        $val = $this->parameters[$parameterName] ?? null;
+        $isTrue = is_string($val) && $this->getParameterBool($parameterName);
+
+        return $isTrue ?: ($this->parameters[$parameterName] ?? $defaultValue);
+    }
+
+    /**
+     * @param string $parameterName
+     * @param array|null $defaultValue
+     * @param callable|null $mapper
+     *
+     * @return array|true|null
+     */
+    public function getParameterTrueOrCsv(string $parameterName, ?array $defaultValue = null, $mapper = null)
+    {
+        $val = $this->getParameterBool($parameterName);
+
+        return $val ?: $this->getParameterCsv($parameterName, $defaultValue, $mapper);
+    }
+
+    /**
+     * @param string $stringValue
+     *
+     * @return array<string>|null
+     */
+    protected function explodeCsv(string $stringValue): ?array
+    {
+        $stringValue = trim($stringValue);
+
+        return trim($stringValue) ? array_map('trim', explode(',', $stringValue)) : null;
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehavior.php b/src/Propel/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehavior.php
new file mode 100644
index 000000000..a985826a1
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehavior.php
@@ -0,0 +1,114 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Behavior\Util\InsertCodeBehavior;
+use Propel\Generator\Model\Behavior;
+use Propel\Generator\Model\Column;
+use Propel\Generator\Model\Table;
+
+/**
+ * Adds empty getter and setter for the given columns.
+ *
+ * Used in SyncedTableBehavior to keep generated model classes of the synced
+ * table compatible with the source table if ignore_columns is used.
+ */
+class EmptyColumnAccessorsBehavior extends InsertCodeBehavior
+{
+    /**
+     * Add this behavior to a table.
+     *
+     * @param \Propel\Generator\Model\Behavior $insertingBehavior
+     * @param \Propel\Generator\Model\Table $table
+     * @param array $columnNames
+     *
+     * @return self
+     */
+    public static function addEmptyAccessors(Behavior $insertingBehavior, Table $table, array $columnNames): self
+    {
+        $behavior = new self();
+        $codeForHooks = $behavior->buildCodeForHooks($columnNames);
+        $behavior->setup($insertingBehavior, $table, $codeForHooks);
+
+        return $behavior;
+    }
+
+    /**
+     * @param array $columnNames
+     *
+     * @return array
+     */
+    protected function buildCodeForHooks(array $columnNames): array
+    {
+        $accessorNames = $this->buildAccessorNames($columnNames);
+
+        return [
+            'objectAttributes' => $this->buildObjectAttributes($accessorNames),
+            'objectCall' => $this->buildObjectCall(),
+        ];
+    }
+
+    /**
+     * @param array $columnNames
+     *
+     * @return array<string>
+     */
+    protected function buildAccessorNames(array $columnNames): array
+    {
+        $accessors = [];
+        foreach ($columnNames as $columnName) {
+            $phpName = (new Column($columnName))->getPhpName();
+            array_push($accessors, 'get' . $phpName, 'set' . $phpName);
+        }
+
+        return $accessors;
+    }
+
+    /**
+     * @param array $accessorNames
+     *
+     * @return string
+     */
+    public function buildObjectAttributes(array $accessorNames): string
+    {
+        if (!$accessorNames) {
+            return '';
+        }
+        $nameToArrayKeyFun = fn (string $name) => "    '$name' => 1,";
+        $namesAsArrayKeys = implode("\n", array_map($nameToArrayKeyFun, $accessorNames));
+
+        return <<<EOT
+/**
+ * Non-existing columns with mock getters and setters.
+ * 
+ * Calls to these accessors will be handled in __call().
+ */
+protected const MOCKED_ACCESSORS = [
+$namesAsArrayKeys
+];
+EOT;
+    }
+
+    /**
+     * @return string
+     */
+    public function buildObjectCall(): string
+    {
+        return <<<EOT
+    if (!empty(static::MOCKED_ACCESSORS[\$name])){
+        try {
+            return \$this->__parentCall(\$name, \$params);
+        } catch(BadMethodCallException \$e){
+            return null;
+        }
+    }
+
+EOT;
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehavior.php b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehavior.php
new file mode 100644
index 000000000..2140d645f
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehavior.php
@@ -0,0 +1,244 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Model\ForeignKey;
+use Propel\Generator\Model\Table;
+
+/**
+ * Syncs another table definition to the one holding this behavior.
+ *
+ * Inherits parameter declaration from SyncedTableBehaviorDeclaration.
+ *
+ * Base for Archivable and Versionable behavior.
+ */
+class SyncedTableBehavior extends SyncedTableBehaviorDeclaration
+{
+    /**
+     * @var \Propel\Generator\Model\Table|null
+     */
+    protected $syncedTable;
+
+    /**
+     * @return \Propel\Generator\Model\Table|null
+     */
+    public function getSyncedTable(): ?Table
+    {
+        return $this->syncedTable;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDefaultTableSuffix(): string
+    {
+        return static::DEFAULT_SYNCED_TABLE_SUFFIX;
+    }
+
+    /**
+     * @return void
+     */
+    protected function setupObject(): void
+    {
+        parent::setupObject();
+        $this->setParameterDefaults();
+    }
+
+    /**
+     * @return void
+     */
+    protected function setParameterDefaults(): void
+    {
+        $params = $this->getParameters();
+        $defaultParams = $this->getDefaultParameters();
+        $this->setParameters(array_merge($defaultParams, $params));
+    }
+
+    /**
+     * @return string
+     */
+    public function resolveSyncedTableName(): string
+    {
+        return $this->getSyncedTableName()
+            ?: $this->getTable()->getOriginCommonName() . $this->getDefaultSyncedTableSuffix();
+    }
+
+    /**
+     * @see \Propel\Generator\Model\Behavior::modifyDatabase()
+     *
+     * @return void
+     */
+    public function modifyDatabase(): void
+    {
+        foreach ($this->getDatabase()->getTables() as $table) {
+            $this->addBehaviorToTable($table);
+        }
+    }
+
+    /**
+     * Note overridden by inheriting classes.
+     *
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function addBehaviorToTable(Table $table): void
+    {
+        if ($table->hasBehavior($this->getId())) {
+            // don't add the same behavior twice
+            return;
+        }
+        $b = clone $this;
+        $table->addBehavior($b);
+    }
+
+    /**
+     * @see \Propel\Generator\Model\Behavior::modifyTable()
+     *
+     * @return void
+     */
+    public function modifyTable(): void
+    {
+        $this->validateParameters();
+        $this->syncedTable = TableSyncer::getSyncedTable($this, $this->getTable());
+        $this->addEmptyAccessorsToTable($this->syncedTable);
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function addEmptyAccessorsToTable(Table $table)
+    {
+        $emptyAccessorColumnNames = $this->getEmptyAccessorColumnNames();
+        if (!$emptyAccessorColumnNames) {
+            return;
+        }
+        EmptyColumnAccessorsBehavior::addEmptyAccessors($this, $table, $emptyAccessorColumnNames);
+    }
+
+    /**
+     * @throws \Propel\Generator\Behavior\SyncedTable\SyncedTableException
+     *
+     * @return void
+     */
+    public function validateParameters(): void
+    {
+        foreach ($this->getForeignKeys() as $fkData) {
+            if (empty($fkData['localColumn']) || empty($fkData['foreignTable']) || empty($fkData['foreignColumn'])) {
+                throw new SyncedTableException($this, 'Missing foreign key parameters - please supply `localColumn`, `foreignTable` and `foreignColumn` for every entry');
+            }
+        }
+    }
+
+    /**
+     * Manual add elements to the synced table.
+     *
+     * Allows extending classes to setup custom element. Happens somewhat
+     * between table setup for backward compatibility.
+     *
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param bool $tableExistsInSchema
+     *
+     * @return void
+     */
+    public function addTableElements(Table $syncedTable, bool $tableExistsInSchema): void
+    {
+        // base implementation does nothing
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     * @param string $parameterWithColumnName
+     * @param array $columnDefinition
+     *
+     * @return void
+     */
+    protected function addColumnFromParameterIfNotExists(Table $table, string $parameterWithColumnName, array $columnDefinition): void
+    {
+        $columnName = $this->getParameter($parameterWithColumnName);
+        TableSyncer::addColumnIfNotExists($table, $columnName, $columnDefinition);
+    }
+
+    /**
+     * @param string $parameterName
+     * @param bool $canBeBoolean
+     * @param \Propel\Generator\Model\Table|null $table
+     *
+     * @throws \Propel\Generator\Behavior\SyncedTable\SyncedTableException
+     *
+     * @return void
+     */
+    protected function checkColumnsInParameterExistInTable(string $parameterName, bool $canBeBoolean = false, ?Table $table = null): void
+    {
+        $table ??= $this->getTable();
+
+        if (
+            empty($this->parameters[$parameterName]) ||
+            ($canBeBoolean && in_array(strtolower($this->parameters[$parameterName]), ['true', 'false', 0, 1]))
+        ) {
+            return;
+        }
+        $columnNames = $this->getParameterCsv($parameterName);
+        foreach ($columnNames as $columnName) {
+            if ($table->hasColumn($columnName)) {
+                continue;
+            }
+
+            throw new SyncedTableException($this, "Column '$columnName' in parameter '$parameterName' does not exist in table");
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function getColumnPrefix(): string
+    {
+        $val = $this->useColumnPrefix();
+        if ($val === true) {
+            return $this->table->getName() . '_';
+        }
+
+        return is_string($val) ? $val : '';
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     *
+     * @throws \Propel\Generator\Behavior\SyncedTable\SyncedTableException
+     *
+     * @return array<\Propel\Generator\Model\Column>
+     */
+    protected function getSyncedPrimaryKeyColumns(Table $syncedTable): array
+    {
+        $prefix = $this->getColumnPrefix();
+        $pkColumns = [];
+        foreach ($this->table->getPrimaryKey() as $sourcePkColumn) {
+            $syncedPkColumnName = $prefix . $sourcePkColumn->getName();
+            $syncedPkColumn = $syncedTable->getColumn($syncedPkColumnName);
+            if (!$syncedPkColumn) {
+                throw new SyncedTableException($this, "Cannot find synced PK column '{$syncedPkColumnName}' for source column '{$sourcePkColumn->getName()}'");
+            }
+            $pkColumns[] = $syncedPkColumn;
+        }
+
+        return $pkColumns;
+    }
+
+    /**
+     * @param array<\Propel\Generator\Model\ForeignKey> $foreignKeys
+     *
+     * @return \Propel\Generator\Model\ForeignKey|null
+     */
+    public function findSyncedRelation(array $foreignKeys): ?ForeignKey
+    {
+        return TableSyncer::findSyncedRelation($this, $foreignKeys);
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehaviorDeclaration.php b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehaviorDeclaration.php
new file mode 100644
index 000000000..f01725118
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableBehaviorDeclaration.php
@@ -0,0 +1,288 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+/**
+ * Declares parameter keys and parameter value accessors.
+ */
+abstract class SyncedTableBehaviorDeclaration extends BehaviorWithParameterAccess implements TableSyncerConfigInterface
+{
+    /**
+     * If no table name is supplied for the synced table, the source table name
+     * will be used ammended by this suffix.
+     *
+     * @var string DEFAULT_SYNCED_TABLE_SUFFIX
+     */
+    protected const DEFAULT_SYNCED_TABLE_SUFFIX = '_synced';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNCED_TABLE = 'table_name';
+
+    /**
+     * @deprecated Needed for BC - prefer table_attributes
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNCED_PHPNAME = 'synced_phpname';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_TABLE_ATTRIBUTES = 'table_attributes';
+
+    /**
+     * @var string The name of the added pk column ('id' if set to 'true').
+     */
+    public const PARAMETER_KEY_ADD_PK = 'add_pk';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_COLUMNS = 'columns';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_FOREIGN_KEYS = 'foreign_keys';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNC = 'sync';
+
+    /**
+     * Add a prefix to synced column names. Uses table name if "true".
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_COLUMN_PREFIX = 'column_prefix';
+
+    /**
+     * Defines relation between source and synced table.
+     *
+     * If 'true', the relation will be created on the model, but no
+     * fk constraints on DB level. To create constraints, pass in a list with
+     * foreign key options.
+     *
+     *
+     * Requires PK of source table on synced table.
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_RELATION = 'relation';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_INHERIT_FOREIGN_KEY_RELATIONS = 'inherit_foreign_key_relations';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_INHERIT_FOREIGN_KEY_CONSTRAINTS = 'inherit_foreign_key_constraints';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNC_INDEXES = 'sync_indexes';
+
+    /**
+     * Parameter can be set to 'index' or 'unique'.
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNC_UNIQUE_AS = 'sync_unique_as';
+
+    /**
+     * List of column names (csv) that should not be synced.
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_IGNORE_COLUMNS = 'ignore_columns';
+
+    /**
+     * Either list of column names (csv) or 'true' to use ignored columns.
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_EMPTY_ACCESSOR_COLUMNS = 'empty_accessor_columns';
+
+    /**
+     * Ignore all columns expect PK.
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNC_PK_ONLY = 'sync_pk_only';
+
+    /**
+     * @return string
+     */
+    public function getDefaultSyncedTableSuffix(): string
+    {
+        return static::DEFAULT_SYNCED_TABLE_SUFFIX;
+    }
+
+    /**
+     * @return array
+     */
+    protected function getDefaultParameters(): array
+    {
+        return [
+            static::PARAMETER_KEY_SYNCED_TABLE => '',
+            static::PARAMETER_KEY_SYNCED_PHPNAME => null,
+            static::PARAMETER_KEY_ADD_PK => null,
+            static::PARAMETER_KEY_SYNC => 'true',
+            static::PARAMETER_KEY_FOREIGN_KEYS => null,
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_RELATIONS => 'false',
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_CONSTRAINTS => 'false',
+            static::PARAMETER_KEY_SYNC_INDEXES => 'false',
+            static::PARAMETER_KEY_SYNC_UNIQUE_AS => null,
+            static::PARAMETER_KEY_RELATION => null,
+            static::PARAMETER_KEY_IGNORE_COLUMNS => null,
+            static::PARAMETER_KEY_EMPTY_ACCESSOR_COLUMNS => null,
+            static::PARAMETER_KEY_SYNC_PK_ONLY => 'false',
+        ];
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getSyncedTableName(): ?string
+    {
+        return $this->getParameter(static::PARAMETER_KEY_SYNCED_TABLE);
+    }
+
+    /**
+     * @return array
+     */
+    public function getTableAttributes(): array
+    {
+        return $this->parameters[static::PARAMETER_KEY_TABLE_ATTRIBUTES] ?? [];
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getSyncedTablePhpName(): ?string
+    {
+        return $this->getParameter(static::PARAMETER_KEY_SYNCED_PHPNAME);
+    }
+
+    /**
+     * @return string|null
+     */
+    public function addPkAs(): ?string
+    {
+        $val = $this->getParameterTrueOrValue(static::PARAMETER_KEY_ADD_PK, false);
+
+        return $val === true ? 'id' : $val;
+    }
+
+    /**
+     * @return array|null
+     */
+    public function getColmns(): ?array
+    {
+        return $this->parameters[static::PARAMETER_KEY_COLUMNS] ?? [];
+    }
+
+    /**
+     * @return array
+     */
+    public function getForeignKeys(): array
+    {
+        return $this->parameters[static::PARAMETER_KEY_FOREIGN_KEYS] ?? [];
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSync(): bool
+    {
+        return $this->getParameterBool(static::PARAMETER_KEY_SYNC, false);
+    }
+
+    /**
+     * @return string|bool
+     */
+    public function useColumnPrefix()
+    {
+        return $this->getParameterTrueOrValue(static::PARAMETER_KEY_COLUMN_PREFIX, false);
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSyncIndexes(): bool
+    {
+        return $this->getParameterBool(static::PARAMETER_KEY_SYNC_INDEXES, false);
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getSyncUniqueIndexAs(): ?string
+    {
+        return $this->getParameter(static::PARAMETER_KEY_SYNC_UNIQUE_AS);
+    }
+
+    /**
+     * @return array|true|null
+     */
+    public function getRelation()
+    {
+        $val = $this->getParameterTrueOrValue(static::PARAMETER_KEY_RELATION);
+
+        return is_array($val) ? $val[0] : $val; // unwrap param-list-item
+    }
+
+    /**
+     * @return bool
+     */
+    public function isInheritForeignKeyRelations(): bool
+    {
+        return $this->getParameterBool(static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_RELATIONS, false);
+    }
+
+    /**
+     * @return bool
+     */
+    public function isInheritForeignKeyConstraints(): bool
+    {
+        return $this->getParameterBool(static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_CONSTRAINTS, false);
+    }
+
+    /**
+     * @return array
+     */
+    public function getIgnoredColumnNames(): array
+    {
+        return $this->getParameterCsv(static::PARAMETER_KEY_IGNORE_COLUMNS, []);
+    }
+
+    /**
+     * @return array|null
+     */
+    public function getEmptyAccessorColumnNames(): ?array
+    {
+        $val = $this->getParameterTrueOrCsv(static::PARAMETER_KEY_EMPTY_ACCESSOR_COLUMNS);
+
+        return ($val === true) ? $this->getIgnoredColumnNames() : $val;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isSyncPkOnly(): bool
+    {
+        return $this->getParameterBool(static::PARAMETER_KEY_SYNC_PK_ONLY, false);
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/SyncedTableException.php b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableException.php
new file mode 100644
index 000000000..04fffc670
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/SyncedTableException.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Runtime\Exception\PropelException;
+use Throwable;
+
+class SyncedTableException extends PropelException
+{
+    /**
+     * Constructs the Exception.
+     *
+     * @param \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior $behavior
+     * @param string $message The Exception message to throw.
+     * @param int $code The Exception code.
+     * @param \Throwable|null $previous The previous exception used for the exception chaining.
+     */
+    public function __construct(SyncedTableBehavior $behavior, string $message = '', int $code = 0, ?Throwable $previous = null)
+    {
+        $messageHead = "Behavior '{$behavior->getName()}' on table '{$behavior->getTable()->getName()}': ";
+        parent::__construct($messageHead . $message, $code, $previous);
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/TableSyncer.php b/src/Propel/Generator/Behavior/SyncedTable/TableSyncer.php
new file mode 100644
index 000000000..89014a003
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/TableSyncer.php
@@ -0,0 +1,533 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Exception\SchemaException;
+use Propel\Generator\Model\Column;
+use Propel\Generator\Model\ForeignKey;
+use Propel\Generator\Model\Index;
+use Propel\Generator\Model\Table;
+use Propel\Generator\Model\Unique;
+use Propel\Generator\Platform\PgsqlPlatform;
+use Propel\Generator\Platform\PlatformInterface;
+use Propel\Generator\Platform\SqlitePlatform;
+use RuntimeException;
+
+/**
+ * Creates the the synced table according to the given behavior.
+ */
+class TableSyncer
+{
+ /**
+  * Attribute key set on built element to identify heritage.
+  *
+  * @var string
+  */
+    public const ATTRIBUTE_KEY_SYNCED_THROUGH = 'synced_through';
+
+    /**
+     * @var \Propel\Generator\Behavior\SyncedTable\TableSyncerConfigInterface
+     */
+    protected $config;
+
+    /**
+     * @param \Propel\Generator\Behavior\SyncedTable\TableSyncerConfigInterface $config
+     */
+    public function __construct(TableSyncerConfigInterface $config)
+    {
+        $this->config = $config;
+    }
+
+    /**
+     * @param \Propel\Generator\Behavior\SyncedTable\TableSyncerConfigInterface $config
+     * @param \Propel\Generator\Model\Table $sourceTable
+     *
+     * @return \Propel\Generator\Model\Table
+     */
+    public static function getSyncedTable(TableSyncerConfigInterface $config, Table $sourceTable): Table
+    {
+        return (new self($config))->buildSyncedTable($sourceTable);
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $sourceTable
+     *
+     * @return \Propel\Generator\Model\Table
+     */
+    protected function buildSyncedTable(Table $sourceTable): Table
+    {
+        $database = $sourceTable->getDatabase();
+        $syncedTableName = $this->config->resolveSyncedTableName();
+
+        $tableExistsInSchema = $database->hasTable($syncedTableName);
+
+        $syncedTable = $tableExistsInSchema ?
+            $database->getTable($syncedTableName) :
+            $this->createSyncedTable($sourceTable);
+
+        if (!$tableExistsInSchema || $this->config->isSync()) {
+            $this->syncTables($sourceTable, $syncedTable);
+        } else {
+            $this->addCustomElements($syncedTable, true);
+        }
+
+        return $syncedTable;
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $sourceTable
+     *
+     * @return \Propel\Generator\Model\Table
+     */
+    protected function createSyncedTable(Table $sourceTable): Table
+    {
+        $database = $sourceTable->getDatabase();
+
+        $tableAttributes = $this->config->getTableAttributes();
+        $defaultAttributes = [
+            'name' => $this->config->resolveSyncedTableName(),
+            'phpName' => $this->config->getSyncedTablePhpName(),
+            'package' => $sourceTable->getPackage(),
+            'schema' => $sourceTable->getSchema(),
+            'namespace' => $sourceTable->getNamespace() ? '\\' . $sourceTable->getNamespace() : null,
+            'identifierQuoting' => $sourceTable->isIdentifierQuotingEnabled(),
+        ];
+
+        return $database->addTable(array_merge($defaultAttributes, $tableAttributes));
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $sourceTable
+     * @param \Propel\Generator\Model\Table $syncedTable
+     *
+     * @return \Propel\Generator\Model\Table
+     */
+    protected function syncTables(Table $sourceTable, Table $syncedTable): Table
+    {
+        $columns = $sourceTable->getColumns();
+        $ignoreColumnNames = $this->resolveIgnoredColumnNames($sourceTable);
+        $this->syncColumns($syncedTable, $columns, $ignoreColumnNames);
+
+        $createRelationParam = $this->config->getRelation();
+        if ($createRelationParam) {
+            $this->addForeignKeyRelationToSyncedTable($syncedTable, $sourceTable, $createRelationParam);
+        }
+
+        $this->addCustomElements($syncedTable, false);
+
+        $inheritFkRelations = $this->config->isInheritForeignKeyRelations();
+        $inheritFkConstraints = $this->config->isInheritForeignKeyConstraints();
+        if ($inheritFkRelations || $inheritFkConstraints) {
+            $foreignKeys = $sourceTable->getForeignKeys();
+            $this->syncForeignKeys($syncedTable, $foreignKeys, $inheritFkConstraints, $ignoreColumnNames);
+        }
+
+        if ($this->config->isSyncIndexes()) {
+            $indexes = $sourceTable->getIndices();
+            $platform = $sourceTable->getDatabase()->getPlatform();
+            $renameIndexes = $this->isDistinctiveIndexNameRequired($platform);
+            $this->syncIndexes($syncedTable, $indexes, $renameIndexes, $ignoreColumnNames);
+        }
+
+        $syncUniqueAs = $this->config->getSyncUniqueIndexAs();
+        if ($syncUniqueAs) {
+            $asIndex = $syncUniqueAs !== 'unique';
+            $uniqueIndexes = $sourceTable->getUnices();
+            $this->syncUniqueIndexes($asIndex, $syncedTable, $uniqueIndexes, $ignoreColumnNames);
+        }
+
+        $this->reapplyTableBehaviors($sourceTable);
+
+        return $syncedTable;
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $sourceTable
+     *
+     * @return array<string>
+     */
+    protected function resolveIgnoredColumnNames(Table $sourceTable): array
+    {
+        $ignoreColumnNames = $this->config->getIgnoredColumnNames();
+        if (!$this->config->isSyncPkOnly()) {
+            return $ignoreColumnNames;
+        }
+        $nonPkColumns = array_filter($sourceTable->getColumns(), fn (Column $column) => !$column->isPrimaryKey());
+        $nonPkColumnNames = array_map(fn (Column $column) => $column->getName(), $nonPkColumns);
+
+        return array_unique(array_merge($ignoreColumnNames, $nonPkColumnNames));
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param bool $tableExistsInSchema
+     *
+     * @return void
+     */
+    protected function addCustomElements(Table $syncedTable, bool $tableExistsInSchema)
+    {
+        $this->addPkColumn($syncedTable);
+        $this->addColumnsFromParameter($syncedTable);
+        $this->addCustomForeignKeysToSyncedTable($syncedTable);
+        $this->config->addTableElements($syncedTable, $tableExistsInSchema);
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function addColumnsFromParameter(Table $table): void
+    {
+        $columnData = $this->config->getColmns();
+        if (!$columnData) {
+            return;
+        }
+        array_map([$table, 'addColumn'], $columnData);
+    }
+
+    /**
+     * Allows inheriting classes to add columns.
+     *
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function addPkColumn(Table $table)
+    {
+        $idColumnName = $this->config->addPkAs();
+        if (!$idColumnName) {
+            return;
+        }
+        static::addColumnIfNotExists($table, $idColumnName, [
+            'type' => 'INTEGER',
+            'required' => 'true',
+            'primaryKey' => 'true',
+            'autoIncrement' => 'true',
+        ]);
+        foreach ($table->getPrimaryKey() as $pkColumn) {
+            if ($pkColumn->getName() === $idColumnName) {
+                continue;
+            }
+            $pkColumn->setPrimaryKey(false);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param \Propel\Generator\Model\Table $sourceTable
+     * @param array|bool $createRelationParam
+     *
+     * @throws \Propel\Generator\Exception\SchemaException If columns are not found.
+     *
+     * @return void
+     */
+    protected function addForeignKeyRelationToSyncedTable(Table $syncedTable, Table $sourceTable, $createRelationParam): void
+    {
+        $fk = new ForeignKey();
+        $syncedTable->addForeignKey($fk);
+        $attributes = [
+            'foreignTable' => $sourceTable->getOriginCommonName(),
+            'foreignSchema' => $sourceTable->getSchema(),
+            'skipSql' => is_array($createRelationParam) ? 'false' : 'true',
+            static::ATTRIBUTE_KEY_SYNCED_THROUGH => $this->config->getId(), // allows to retrieve relation
+        ];
+
+        if (is_array($createRelationParam)) {
+            $attributes = array_merge($attributes, $createRelationParam);
+        }
+        $fk->loadMapping($attributes);
+
+        foreach ($sourceTable->getPrimaryKey() as $sourceColumn) {
+            $syncedColumnName = $this->getPrefixedColumnName($sourceColumn->getName());
+            $syncedColumn = $syncedTable->getColumn($syncedColumnName);
+            if (!$syncedColumn) {
+                throw new SchemaException('Synced table behavior cannot create relation: primary key column of source table is missing on synced table: ' . $syncedColumnName);
+            }
+            $fk->addReference($syncedColumn, $sourceColumn);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Behavior\SyncedTable\TableSyncerConfigInterface $config
+     * @param array<\Propel\Generator\Model\ForeignKey> $foreignKeys
+     *
+     * @throws \RuntimeException If more than one relation is found.
+     *
+     * @return \Propel\Generator\Model\ForeignKey|null
+     */
+    public static function findSyncedRelation(TableSyncerConfigInterface $config, array $foreignKeys): ?ForeignKey
+    {
+        $filter = fn (ForeignKey $fk) => $fk->getAttribute(static::ATTRIBUTE_KEY_SYNCED_THROUGH) === $config->getId();
+        $matches = array_filter($foreignKeys, $filter);
+        if (count($matches) > 1) {
+            throw new RuntimeException('More than one relation identified through ');
+        }
+
+        return reset($matches) ?: null;
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     *
+     * @return void
+     */
+    protected function addCustomForeignKeysToSyncedTable(Table $syncedTable)
+    {
+        $foreignKeys = $this->config->getForeignKeys();
+        foreach ($foreignKeys as $fkData) {
+            $this->createForeignKeyFromParameters($syncedTable, $fkData);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param array<\Propel\Generator\Model\Column> $columns
+     * @param array<string> $ignoreColumnNames
+     *
+     * @return void
+     */
+    protected function syncColumns(Table $syncedTable, array $columns, array $ignoreColumnNames)
+    {
+        foreach ($columns as $sourceColumn) {
+            $syncedColumnName = $this->getPrefixedColumnName($sourceColumn->getName());
+            if (in_array($sourceColumn->getName(), $ignoreColumnNames) || $syncedTable->hasColumn($syncedColumnName)) {
+                continue;
+            }
+            $syncedColumn = clone $sourceColumn;
+            $syncedColumn->setName($syncedColumnName);
+            $syncedColumn->setPhpName(null);
+            $syncedColumn->clearReferrers();
+            $syncedColumn->clearInheritanceList();
+            $syncedColumn->setAutoIncrement(false);
+            $syncedTable->addColumn($syncedColumn);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param array<\Propel\Generator\Model\ForeignKey> $foreignKeys
+     * @param bool $inheritConstraints
+     * @param array<string> $ignoreColumnNames
+     *
+     * @return void
+     */
+    protected function syncForeignKeys(Table $syncedTable, array $foreignKeys, bool $inheritConstraints, array $ignoreColumnNames)
+    {
+        foreach ($foreignKeys as $originalForeignKey) {
+            if (
+                $syncedTable->containsForeignKeyWithSameName($originalForeignKey)
+                || array_intersect($originalForeignKey->getLocalColumns(), $ignoreColumnNames)
+            ) {
+                continue;
+            }
+            $syncedForeignKey = clone $originalForeignKey;
+            $syncedForeignKey->setSkipSql(!$inheritConstraints);
+            $this->prefixForeignKeyColumnNames($syncedForeignKey);
+            $syncedTable->addForeignKey($syncedForeignKey);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\ForeignKey $fk
+     *
+     * @return void
+     */
+    protected function prefixForeignKeyColumnNames(ForeignKey $fk): void
+    {
+        if (!$this->config->getColumnPrefix()) {
+            return;
+        }
+        $mapping = $fk->getColumnObjectsMapping();
+        $fk->clearReferences();
+        foreach ($mapping as $def) {
+            $fk->addReference([
+                'local' => $this->getPrefixedColumnName($def['local']->getName()),
+                'foreign' => $def['foreign'] ? $def['foreign']->getName() : null,
+                'value' => $def['value'],
+            ]);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param array<\Propel\Generator\Model\Index> $indexes
+     * @param bool $rename
+     * @param array<string> $ignoreColumnNames
+     *
+     * @return void
+     */
+    protected function syncIndexes(Table $syncedTable, array $indexes, bool $rename, array $ignoreColumnNames)
+    {
+        foreach ($indexes as $originalIndex) {
+            $index = clone $originalIndex;
+
+            if (!$this->removeColumnsFromIndex($index, $ignoreColumnNames)) {
+                continue;
+            }
+
+            if ($rename) {
+                // by removing the name, Propel will generate a unique name based on table and columns
+                $index->setName(null);
+            }
+
+            $this->prefixIndexColumnNames($index, $syncedTable);
+
+            if ($syncedTable->hasIndex($index->getName())) {
+                continue;
+            }
+            $syncedTable->addIndex($index);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Index $index
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function prefixIndexColumnNames(Index $index, Table $table): void
+    {
+        if (!$this->config->getColumnPrefix()) {
+            return;
+        }
+        $updatedColumnNames = array_map([$this, 'getPrefixedColumnName'], $index->getColumns());
+        $columns = array_map([$table, 'getColumn'], $updatedColumnNames);
+        $index->setColumns($columns);
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Index $index
+     * @param array $ignoreColumnNames
+     *
+     * @return \Propel\Generator\Model\Index|null Returns null if the index has no remaining columns.
+     */
+    protected function removeColumnsFromIndex(Index $index, array $ignoreColumnNames): ?Index
+    {
+        $ignoredColumnsInIndex = array_intersect($index->getColumns(), $ignoreColumnNames);
+        if (!$ignoredColumnsInIndex) {
+            return $index;
+        }
+        if (count($ignoredColumnsInIndex) === count($index->getColumns())) {
+            return null;
+        }
+        $indexColumns = array_filter($index->getColumnObjects(), fn (Column $col) => !in_array($col->getName(), $ignoredColumnsInIndex));
+        $index->setColumns($indexColumns);
+
+        return $index;
+    }
+
+    /**
+     * Create regular indexes from unique indexes on the given synced table.
+     *
+     * The synced table cannot use unique indexes, as even unique data on the
+     * source table can be syncedd several times.
+     *
+     * @param bool $asIndex
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param array<\Propel\Generator\Model\Unique> $uniqueIndexes
+     * @param array<string> $ignoreColumnNames
+     *
+     * @return void
+     */
+    protected function syncUniqueIndexes(bool $asIndex, Table $syncedTable, array $uniqueIndexes, array $ignoreColumnNames)
+    {
+        $indexClass = $asIndex ? Index::class : Unique::class;
+        foreach ($uniqueIndexes as $unique) {
+            if (array_intersect($unique->getColumns(), $ignoreColumnNames)) {
+                continue;
+            }
+            $index = new $indexClass();
+            $index->setTable($syncedTable);
+            foreach ($unique->getColumns() as $columnName) {
+                $columnDef = [
+                    'name' => $this->getPrefixedColumnName($columnName),
+                    'size' => $unique->getColumnSize($columnName),
+                ];
+                $index->addColumn($columnDef);
+            }
+
+            $existingIndexes = $asIndex ? $syncedTable->getIndices() : $syncedTable->getUnices();
+            $existingIndexNames = array_map(fn ($index) => $index->getName(), $existingIndexes);
+            if (in_array($index->getName(), $existingIndexNames)) {
+                continue;
+            }
+            $asIndex ? $syncedTable->addIndex($index) : $syncedTable->addUnique($index);
+        }
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     *
+     * @return void
+     */
+    protected function reapplyTableBehaviors(Table $table)
+    {
+        $behaviors = $table->getDatabase()->getBehaviors();
+        foreach ($behaviors as $behavior) {
+            if ($behavior instanceof SyncedTableBehavior) {
+                continue;
+            }
+            $behavior->modifyDatabase();
+        }
+    }
+
+    /**
+     * @psalm-param array{name?: string, localColumn: string, foreignTable: string, foreignColumn: string, relationOnly?: string} $fkData
+     *
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param array $fkData
+     *
+     * @return void
+     */
+    protected function createForeignKeyFromParameters(Table $syncedTable, array $fkData): void
+    {
+        $fk = new ForeignKey($fkData['name'] ?? null);
+        $fk->addReference($fkData['localColumn'], $fkData['foreignColumn']);
+        $syncedTable->addForeignKey($fk);
+        $fk->loadMapping($fkData);
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     * @param string $columnName
+     * @param array $columnDefinition
+     *
+     * @return \Propel\Generator\Model\Column|null
+     */
+    public static function addColumnIfNotExists(Table $table, string $columnName, array $columnDefinition): ?Column
+    {
+        if ($table->hasColumn($columnName)) {
+            return null;
+        }
+        $columnDefinitionWithName = array_merge(['name' => $columnName], $columnDefinition);
+
+        return $table->addColumn($columnDefinitionWithName);
+    }
+
+    /**
+     * @param \Propel\Generator\Platform\PlatformInterface|null $platform
+     *
+     * @return bool
+     */
+    protected function isDistinctiveIndexNameRequired(?PlatformInterface $platform): bool
+    {
+        return $platform instanceof PgsqlPlatform || $platform instanceof SqlitePlatform;
+    }
+
+    /**
+     * @param string $columnName
+     *
+     * @return string
+     */
+    protected function getPrefixedColumnName(string $columnName): string
+    {
+        return $this->config->getColumnPrefix() . $columnName;
+    }
+}
diff --git a/src/Propel/Generator/Behavior/SyncedTable/TableSyncerConfigInterface.php b/src/Propel/Generator/Behavior/SyncedTable/TableSyncerConfigInterface.php
new file mode 100644
index 000000000..186bd05d0
--- /dev/null
+++ b/src/Propel/Generator/Behavior/SyncedTable/TableSyncerConfigInterface.php
@@ -0,0 +1,112 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Model\Table;
+
+interface TableSyncerConfigInterface
+{
+    /**
+     * @return string
+     */
+    public function getId(): string;
+
+    /**
+     * @return string
+     */
+    public function getDefaultSyncedTableSuffix(): string;
+
+    /**
+     * @return string
+     */
+    public function resolveSyncedTableName(): string;
+
+    /**
+     * @return string|null
+     */
+    public function getSyncedTablePhpName(): ?string;
+
+    /**
+     * @return array
+     */
+    public function getTableAttributes(): array;
+
+    /**
+     * @return string|null
+     */
+    public function addPkAs(): ?string;
+
+    /**
+     * @return array|null
+     */
+    public function getColmns(): ?array;
+
+    /**
+     * @return array
+     */
+    public function getForeignKeys(): array;
+
+    /**
+     * @return bool
+     */
+    public function isSync(): bool;
+
+    /**
+     * @return bool
+     */
+    public function isSyncIndexes(): bool;
+
+    /**
+     * @return string|null
+     */
+    public function getSyncUniqueIndexAs(): ?string;
+
+    /**
+     * @return array|true
+     */
+    public function getRelation();
+
+    /**
+     * @return bool
+     */
+    public function isInheritForeignKeyRelations(): bool;
+
+    /**
+     * @return bool
+     */
+    public function isInheritForeignKeyConstraints(): bool;
+
+    /**
+     * @return array
+     */
+    public function getIgnoredColumnNames(): array;
+
+    /**
+     * @return bool
+     */
+    public function isSyncPkOnly(): bool;
+
+    /**
+     * Manual add elements to the synced table.
+     *
+     * Allows extending classes to setup custom element. Happens somewhat
+     * between table setup for backward compatibility.
+     *
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param bool $tableExistsInSchema
+     *
+     * @return void
+     */
+    public function addTableElements(Table $syncedTable, bool $tableExistsInSchema): void;
+
+    /**
+     * @return string
+     */
+    public function getColumnPrefix(): string;
+}
diff --git a/src/Propel/Generator/Behavior/Util/InsertCodeBehavior.php b/src/Propel/Generator/Behavior/Util/InsertCodeBehavior.php
new file mode 100644
index 000000000..df238a38f
--- /dev/null
+++ b/src/Propel/Generator/Behavior/Util/InsertCodeBehavior.php
@@ -0,0 +1,177 @@
+<?php
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Generator\Behavior\Util;
+
+use Propel\Generator\Builder\Om\ObjectBuilder;
+use Propel\Generator\Model\Behavior;
+use Propel\Generator\Model\Table;
+
+/**
+ * Used internally to put code on another class. WIP - only currently used
+ * functionality is implemented. Enhance if needed.
+ */
+class InsertCodeBehavior extends Behavior
+{
+    /**
+     * @var array<string, string>
+     */
+    protected $codeForHooks = [];
+
+    /**
+     * Add this behavior to a table.
+     *
+     * @param \Propel\Generator\Model\Behavior $insertingBehavior
+     * @param \Propel\Generator\Model\Table $table
+     * @param array $codeForHooks
+     *
+     * @return \Propel\Generator\Behavior\Util\InsertCodeBehavior|self
+     */
+    public static function addToTable(Behavior $insertingBehavior, Table $table, array $codeForHooks): self
+    {
+        $behavior = new self();
+        $behavior->setup($insertingBehavior, $table, $codeForHooks);
+
+        return $behavior;
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Behavior $insertingBehavior
+     * @param \Propel\Generator\Model\Table $table
+     * @param array $codeForHooks
+     *
+     * @return void
+     */
+    public function setup(Behavior $insertingBehavior, Table $table, array $codeForHooks)
+    {
+        $id = "insert_code_from_{$insertingBehavior->getName()}_behavior_on_table_{$insertingBehavior->getTable()->getName()}";
+        $this->setId($id);
+        $this->setDatabase($table->getDatabase());
+        $this->setTable($table);
+        $this->codeForHooks = $codeForHooks;
+        $table->addBehavior($this);
+    }
+
+    /**
+     * @see \Propel\Generator\Model\Behavior::allowMultiple()
+     *
+     * @return bool
+     */
+    public function allowMultiple(): bool
+    {
+        return true;
+    }
+
+    // object builder hooks
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function objectAttributes(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('objectAttributes', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function objectMethods(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('objectMethods', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function objectCall(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('objectCall', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function preInsert(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('preInsert', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function postInsert(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('postInsert', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function preUpdate(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('preUpdate', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function postUpdate(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('postUpdate', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function preDelete(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('preDelete', $objectBuilder);
+    }
+
+    /**
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    public function postDelete(ObjectBuilder $objectBuilder): string
+    {
+        return $this->resolveCode('postDelete', $objectBuilder);
+    }
+
+    /**
+     * @param string $hook
+     * @param \Propel\Generator\Builder\Om\ObjectBuilder $objectBuilder
+     *
+     * @return string
+     */
+    protected function resolveCode(string $hook, ObjectBuilder $objectBuilder): string
+    {
+        $code = $this->codeForHooks[$hook] ?? null;
+        if (!$code) {
+            return '';
+        }
+
+        return is_callable($code) ? $code($objectBuilder) : $code;
+    }
+}
diff --git a/src/Propel/Generator/Behavior/Versionable/VersionableBehavior.php b/src/Propel/Generator/Behavior/Versionable/VersionableBehavior.php
index 62b9af2b3..6bf438be7 100644
--- a/src/Propel/Generator/Behavior/Versionable/VersionableBehavior.php
+++ b/src/Propel/Generator/Behavior/Versionable/VersionableBehavior.php
@@ -8,7 +8,8 @@
 
 namespace Propel\Generator\Behavior\Versionable;
 
-use Propel\Generator\Model\Behavior;
+use Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior;
+use Propel\Generator\Behavior\SyncedTable\TableSyncer;
 use Propel\Generator\Model\Column;
 use Propel\Generator\Model\ForeignKey;
 use Propel\Generator\Model\Table;
@@ -18,24 +19,33 @@
  *
  * @author Francois Zaninotto
  */
-class VersionableBehavior extends Behavior
+class VersionableBehavior extends SyncedTableBehavior
 {
+ /**
+  * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::DEFAULT_SYNCED_TABLE_SUFFIX
+  *
+  * @var string DEFAULT_SYNCED_TABLE_SUFFIX
+  */
+    protected const DEFAULT_SYNCED_TABLE_SUFFIX = '_version';
+
+    /**
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::PARAMETER_KEY_SYNCED_TABLE
+     *
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNCED_TABLE = 'version_table';
+
     /**
-     * Default parameters value
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::PARAMETER_KEY_SYNCED_PHPNAME
      *
-     * @var array<string, mixed>
+     * @var string
      */
-    protected $parameters = [
-        'version_column' => 'version',
-        'version_table' => '',
-        'log_created_at' => 'false',
-        'log_created_by' => 'false',
-        'log_comment' => 'false',
-        'version_created_at_column' => 'version_created_at',
-        'version_created_by_column' => 'version_created_by',
-        'version_comment_column' => 'version_comment',
-        'indices' => 'false',
-    ];
+    public const PARAMETER_KEY_SYNCED_PHPNAME = 'version_phpname';
+
+    /**
+     * @var string
+     */
+    public const PARAMETER_KEY_SYNC_INDEXES = 'indices';
 
     /**
      * @var \Propel\Generator\Model\Table
@@ -58,73 +68,100 @@ class VersionableBehavior extends Behavior
     protected $tableModificationOrder = 80;
 
     /**
+     * @see \Propel\Generator\Behavior\SyncedTable\SyncedTableBehavior::getDefaultParameters()
+     *
+     * @return array
+     */
+    protected function getDefaultParameters(): array
+    {
+        return [
+            'version_column' => 'version',
+            static::PARAMETER_KEY_SYNCED_TABLE => '',
+            static::PARAMETER_KEY_SYNCED_PHPNAME => null,
+            static::PARAMETER_KEY_SYNC => 'false',
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_RELATIONS => 'false',
+            static::PARAMETER_KEY_INHERIT_FOREIGN_KEY_CONSTRAINTS => 'false',
+            static::PARAMETER_KEY_FOREIGN_KEYS => null,
+            static::PARAMETER_KEY_SYNC_INDEXES => 'false',
+            static::PARAMETER_KEY_SYNC_UNIQUE_AS => null,
+            static::PARAMETER_KEY_RELATION => [['onDelete' => 'cascade']],
+            'log_created_at' => 'false',
+            'log_created_by' => 'false',
+            'log_comment' => 'false',
+            'version_created_at_column' => 'version_created_at',
+            'version_created_by_column' => 'version_created_by',
+            'version_comment_column' => 'version_comment',
+        ];
+    }
+
+    /**
+     * @return \Propel\Generator\Model\Table
+     */
+    public function getVersionTable(): Table
+    {
+        return $this->syncedTable;
+    }
+
+    /**
+     * @param \Propel\Generator\Model\Table $table
+     *
      * @return void
      */
-    public function modifyDatabase(): void
+    protected function addBehaviorToTable(Table $table): void
     {
-        foreach ($this->getDatabase()->getTables() as $table) {
-            if ($table->hasBehavior($this->getId())) {
-                // don't add the same behavior twice
-                continue;
-            }
-            if (property_exists($table, 'isVersionTable')) {
-                // don't add the behavior to version tables
-                continue;
-            }
-            $b = clone $this;
-            $table->addBehavior($b);
+        if (property_exists($table, 'isVersionTable')) {
+            // don't add the behavior to version tables
+            return;
         }
+        parent::addBehaviorToTable($table);
     }
 
     /**
-     * @return void
+     * @return string|null
      */
-    public function modifyTable(): void
+    public function getSyncedTablePhpName(): ?string
     {
-        $this->addVersionColumn();
-        $this->addLogColumns();
-        $this->addVersionTable();
-        $this->addForeignKeyVersionColumns();
+        // required for BC
+        return parent::getSyncedTablePhpName() ?? $this->getTable()->getPhpName() . 'Version';
     }
 
     /**
      * @return void
      */
-    protected function addVersionColumn(): void
+    public function modifyTable(): void
     {
-        $table = $this->getTable();
-        // add the version column
-        if (!$table->hasColumn($this->getParameter('version_column'))) {
-            $table->addColumn([
-                'name' => $this->getParameter('version_column'),
-                'type' => 'INTEGER',
-                'default' => 0,
-            ]);
-        }
+        $this->addColumnsToSourceTable();
+        parent::modifyTable();
+        $this->addForeignKeyVersionColumns();
     }
 
     /**
      * @return void
      */
-    protected function addLogColumns(): void
+    protected function addColumnsToSourceTable(): void
     {
         $table = $this->getTable();
-        if ($this->getParameter('log_created_at') === 'true' && !$table->hasColumn($this->getParameter('version_created_at_column'))) {
-            $table->addColumn([
-                'name' => $this->getParameter('version_created_at_column'),
+
+        $this->addColumnFromParameterIfNotExists($table, 'version_column', [
+            'type' => 'INTEGER',
+            'default' => 0,
+        ]);
+
+        if ($this->getParameter('log_created_at') === 'true') {
+            $this->addColumnFromParameterIfNotExists($table, 'version_created_at_column', [
                 'type' => 'TIMESTAMP',
             ]);
         }
-        if ($this->getParameter('log_created_by') === 'true' && !$table->hasColumn($this->getParameter('version_created_by_column'))) {
-            $table->addColumn([
-                'name' => $this->getParameter('version_created_by_column'),
+
+        if ($this->getParameter('log_created_by') === 'true') {
+            $this->addColumnFromParameterIfNotExists($table, 'version_created_by_column', [
                 'type' => 'VARCHAR',
                 'size' => 100,
             ]);
         }
-        if ($this->getParameter('log_comment') === 'true' && !$table->hasColumn($this->getParameter('version_comment_column'))) {
-            $table->addColumn([
-                'name' => $this->getParameter('version_comment_column'),
+
+        if ($this->getParameter('log_comment') === 'true') {
+            $this->addColumnFromParameterIfNotExists($table, 'version_comment_column', [
                 'type' => 'VARCHAR',
                 'size' => 255,
             ]);
@@ -132,68 +169,25 @@ protected function addLogColumns(): void
     }
 
     /**
+     * @param \Propel\Generator\Model\Table $syncedTable
+     * @param bool $tableExistsInSchema
+     *
      * @return void
      */
-    protected function addVersionTable(): void
+    public function addTableElements(Table $syncedTable, bool $tableExistsInSchema): void
     {
-        $table = $this->getTable();
-        $database = $table->getDatabase();
-        $versionTableName = $this->getParameter('version_table') ?: ($table->getOriginCommonName() . '_version');
-        if (!$database->hasTable($versionTableName)) {
-            // create the version table
-            $versionTable = $database->addTable([
-                'name' => $versionTableName,
-                'phpName' => $this->getVersionTablePhpName(),
-                'package' => $table->getPackage(),
-                'schema' => $table->getSchema(),
-                'namespace' => $table->getNamespace() ? '\\' . $table->getNamespace() : null,
-                'skipSql' => $table->isSkipSql(),
-                'identifierQuoting' => $table->isIdentifierQuotingEnabled(),
-            ]);
-            $versionTable->isVersionTable = true;
-            // every behavior adding a table should re-execute database behaviors
-            foreach ($database->getBehaviors() as $behavior) {
-                $behavior->modifyDatabase();
-            }
-            // copy all the columns
-            foreach ($table->getColumns() as $column) {
-                $columnInVersionTable = clone $column;
-                $columnInVersionTable->clearInheritanceList();
-                if ($columnInVersionTable->hasReferrers()) {
-                    $columnInVersionTable->clearReferrers();
-                }
-                if ($columnInVersionTable->isAutoincrement()) {
-                    $columnInVersionTable->setAutoIncrement(false);
-                }
-                $versionTable->addColumn($columnInVersionTable);
-            }
-            // create the foreign key
-            $fk = new ForeignKey();
-            $fk->setForeignTableCommonName($table->getCommonName());
-            $fk->setForeignSchemaName($table->getSchema());
-            $fk->setOnDelete('CASCADE');
-            $fk->setOnUpdate(null);
-            $tablePKs = $table->getPrimaryKey();
-            foreach ($versionTable->getPrimaryKey() as $key => $column) {
-                $fk->addReference($column, $tablePKs[$key]);
-            }
-            $versionTable->addForeignKey($fk);
-
-            if ($this->getParameter('indices') === 'true') {
-                foreach ($table->getIndices() as $index) {
-                    $index = clone $index;
-                    $versionTable->addIndex($index);
-                }
-            }
+        parent::addTableElements($syncedTable, $tableExistsInSchema);
 
-            // add the version column to the primary key
-            $versionColumn = $versionTable->getColumn($this->getParameter('version_column'));
-            $versionColumn->setNotNull(true);
-            $versionColumn->setPrimaryKey(true);
-            $this->versionTable = $versionTable;
-        } else {
-            $this->versionTable = $database->getTable($versionTableName);
+        if ($tableExistsInSchema) {
+            return;
         }
+        $syncedTable->isVersionTable = true;
+        $syncedTable->setSkipSql($this->getTable()->isSkipSql());
+
+        // add the version column to the primary key
+        $versionColumn = $syncedTable->getColumn($this->getParameter('version_column'));
+        $versionColumn->setNotNull(true);
+        $versionColumn->setPrimaryKey(true);
     }
 
     /**
@@ -201,54 +195,29 @@ protected function addVersionTable(): void
      */
     public function addForeignKeyVersionColumns(): void
     {
-        $versionTable = $this->versionTable;
+        $versionTable = $this->syncedTable;
         foreach ($this->getVersionableFks() as $fk) {
             $fkVersionColumnName = $fk->getLocalColumnName() . '_version';
-            if (!$versionTable->hasColumn($fkVersionColumnName)) {
-                $versionTable->addColumn([
-                    'name' => $fkVersionColumnName,
-                    'type' => 'INTEGER',
-                    'default' => 0,
-                ]);
-            }
+            TableSyncer::addColumnIfNotExists($versionTable, $fkVersionColumnName, [
+                'type' => 'INTEGER',
+                'default' => 0,
+            ]);
         }
 
         foreach ($this->getVersionableReferrers() as $fk) {
             $fkTableName = $fk->getTable()->getName();
             $fkIdsColumnName = $fkTableName . '_ids';
-            if (!$versionTable->hasColumn($fkIdsColumnName)) {
-                $versionTable->addColumn([
-                    'name' => $fkIdsColumnName,
-                    'type' => 'ARRAY',
-                ]);
-            }
+            TableSyncer::addColumnIfNotExists($versionTable, $fkIdsColumnName, [
+                'type' => 'ARRAY',
+            ]);
 
             $fkVersionsColumnName = $fkTableName . '_versions';
-            if (!$versionTable->hasColumn($fkVersionsColumnName)) {
-                $versionTable->addColumn([
-                    'name' => $fkVersionsColumnName,
-                    'type' => 'ARRAY',
-                ]);
-            }
+            TableSyncer::addColumnIfNotExists($versionTable, $fkVersionsColumnName, [
+                'type' => 'ARRAY',
+            ]);
         }
     }
 
-    /**
-     * @return \Propel\Generator\Model\Table
-     */
-    public function getVersionTable(): Table
-    {
-        return $this->versionTable;
-    }
-
-    /**
-     * @return string
-     */
-    public function getVersionTablePhpName(): string
-    {
-        return $this->getTable()->getPhpName() . 'Version';
-    }
-
     /**
      * @return list<\Propel\Generator\Model\ForeignKey>
      */
@@ -297,7 +266,7 @@ public function getReferrerIdsColumn(ForeignKey $fk): ?Column
         $fkTableName = $fk->getTable()->getName();
         $fkIdsColumnName = $fkTableName . '_ids';
 
-        return $this->versionTable->getColumn($fkIdsColumnName);
+        return $this->syncedTable->getColumn($fkIdsColumnName);
     }
 
     /**
@@ -310,7 +279,7 @@ public function getReferrerVersionsColumn(ForeignKey $fk): ?Column
         $fkTableName = $fk->getTable()->getName();
         $fkIdsColumnName = $fkTableName . '_versions';
 
-        return $this->versionTable->getColumn($fkIdsColumnName);
+        return $this->syncedTable->getColumn($fkIdsColumnName);
     }
 
     /**
diff --git a/src/Propel/Generator/Model/Behavior.php b/src/Propel/Generator/Model/Behavior.php
index 0859dc0ab..5b6b60a51 100644
--- a/src/Propel/Generator/Model/Behavior.php
+++ b/src/Propel/Generator/Model/Behavior.php
@@ -275,7 +275,7 @@ public function getParameter(string $name)
      */
     public function parameterHasValue(string $paramName, $value): bool
     {
-        return $this->parameters[$paramName] === $value;
+        return ($this->parameters[$paramName] ?? null) === $value;
     }
 
     /**
diff --git a/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorSyncTest.php b/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorSyncTest.php
deleted file mode 100644
index 107823423..000000000
--- a/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorSyncTest.php
+++ /dev/null
@@ -1,362 +0,0 @@
-<?php
-
-/*
- *	$Id$
- * This file is part of the Propel package.
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- *
- * @license MIT License
- */
-
-/**
- * MIT License. This file is part of the Propel package.
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Propel\Tests\Generator\Behavior\Archivable;
-
-use Exception;
-use Propel\Generator\Exception\EngineException;
-use Propel\Generator\Model\Database;
-use Propel\Generator\Model\Diff\TableComparator;
-use Propel\Generator\Model\Diff\TableDiff;
-use Propel\Generator\Platform\MysqlPlatform;
-use Propel\Generator\Util\QuickBuilder;
-use Propel\Tests\TestCase;
-
-/**
- * Tests the `sync` parameter of ArchivableBehavior, which automatically applies
- * changes to the source table to the archive table.
- */
-class ArchivableBehaviorSyncTest extends TestCase
-{
- /**
-  * @return array
-  */
-    public function syncTestDataProvider(): array
-    {
-        return [
-            [
-                // description
-                'Should sync columns',
-                //additional behavior parameters
-                '',
-                // source table columns: some columns
-                '
-                <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
-                <column name="fk_column" type="INTEGER"/>
-                <column name="string_column" type="VARCHAR" size="42"/>
-                ',
-                // archive table input columns
-                '',
-                // auxiliary schema data
-                '',
-                // archive output columns
-                '
-                <column name="id" required="true" primaryKey="true" type="INTEGER"/>
-                <column name="fk_column" type="INTEGER"/>
-                <column name="string_column" type="VARCHAR" size="42"/>
-                ',
-            ], [
-                // description
-                'Cannot override columns declared on archive table',
-                //additional behavior parameters
-                '',
-                // source table columns: column with size 8
-                '<column name="string_column" type="VARCHAR" size="8"/>',
-                // archive table input columns: column with size 999
-                '<column name="string_column" type="VARCHAR" size="999"/>',
-                // auxiliary schema data
-                '',
-                // archive output columns
-                '<column name="string_column" type="VARCHAR" size="999"/>',
-            ], [
-                // description
-                'Should sync index',
-                //additional behavior parameters
-                '',
-                // source table columns: column with index
-                '
-                <column name="string_column" type="VARCHAR" size="42"/>
-                <index>
-                    <index-column name="string_column" />
-                </index>
-                ',
-                // archive table input columns
-                '',
-                // auxiliary schema data
-                '',
-                // archive output columns
-                '
-                <column name="string_column" type="VARCHAR" size="42"/>
-                <index name="archive_table_i_811f1f">
-                    <index-column name="string_column" />
-                </index>
-                ',
-            ], [
-                // description
-                'Should sync fk column without relation',
-                //additional behavior parameters
-                '',
-                // source table columns: column with fk
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="fk_table" name="LeFk">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-                // archive table input columns
-                '',
-                // auxiliary schema data
-                '
-                <table name="fk_table">
-                    <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
-                </table>
-                ',
-                // archive output columns
-                '<column name="fk_column" type="INTEGER"/>',
-            ], [
-                // description
-                'Should sync fk column with relation through parameter',
-                //additional behavior parameters
-                '<parameter name="inherit_foreign_key_constraints" value="true"/>',
-                // source table columns: column with fk
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="fk_table" name="LeFk">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-                // archive table input columns
-                '',
-                // auxiliary schema data
-                '
-                <table name="fk_table">
-                    <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
-                </table>
-                ',
-                // archive output columns
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="fk_table" name="LeFk">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-            ], [
-                // description
-                'Behavior can override synced FKs',
-                //additional behavior parameters: inherit fks but override relation "LeName"
-                '
-                <parameter name="inherit_foreign_key_constraints" value="true"/>
-                <parameter-list name="foreign_keys">
-                    <parameter-list-item>
-                        <parameter name="name" value="LeName" />
-                        <parameter name="localColumn" value="fk_column" />
-                        <parameter name="foreignTable" value="new_table" />
-                        <parameter name="foreignColumn" value="id" />
-                    </parameter-list-item>
-                </parameter-list>
-                ',
-                // source table columns: column with fk
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="old_table" name="LeName">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-                // archive table input columns
-                '',
-                // auxiliary schema data
-                '
-                <table name="old_table">
-                    <column name="id" type="INTEGER"/>
-                </table>
-                <table name="new_table">
-                    <column name="id" type="INTEGER"/>
-                </table>
-                ',
-                // archive output columns
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="new_table" name="LeName">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-            ], [
-                // description
-                'Behavior cannot override FKs declared on archive table',
-                //additional behavior parameters: declare fk
-                '
-                <parameter-list name="foreign_keys">
-                    <parameter-list-item>
-                        <parameter name="name" value="LeName" />
-                        <parameter name="localColumn" value="fk_column" />
-                        <parameter name="foreignTable" value="new_table" />
-                        <parameter name="foreignColumn" value="id" />
-                    </parameter-list-item>
-                </parameter-list>
-                ',
-                // source table columns
-                '<column name="fk_column" type="INTEGER"/>',
-                // archive table input columns: fk conflicting with behavior fk
-                '
-                <column name="fk_column" type="INTEGER"/>
-                <foreign-key foreignTable="old_table" name="LeName">
-                    <reference local="fk_column" foreign="id"/>
-                </foreign-key>
-                ',
-                // auxiliary schema data
-                '
-                <table name="old_table">
-                    <column name="id" type="INTEGER"/>
-                </table>
-                <table name="new_table">
-                    <column name="id" type="INTEGER"/>
-                </table>
-                ',
-                // archive output columns: expect exception
-                EngineException::class,
-            ],
-        ];
-    }
-
-    /**
-     * @dataProvider syncTestDataProvider
-     *
-     * @param string $message
-     * @param string $behaviorAdditions
-     * @param string $sourceTableContentTags
-     * @param string $archiveTableInputTags
-     * @param string $auxiliaryTables
-     * @param string $archiveTableOutputTags
-     *
-     * @return void
-     */
-    public function testSync(
-        string $message,
-        string $behaviorAdditions,
-        string $sourceTableContentTags,
-        string $archiveTableInputTags,
-        string $auxiliaryTables,
-        string $archiveTableOutputTags
-    ) {
-        // source table: some columns
-        // archive table: empty
-        $schema = <<<EOT
-<database>
-    <table name="source_table">
-        <behavior name="archivable">
-            <parameter name="archive_table" value="archive_table"/>
-            <parameter name="log_archived_at" value="false"/>
-            <parameter name="sync" value="true"/>
-            $behaviorAdditions
-        </behavior>
-
-        $sourceTableContentTags
-
-    </table>
-    
-    $auxiliaryTables
-
-    <table name="archive_table">$archiveTableInputTags</table>
-</database>
-EOT;
-
-        // archive table: all columns plus archived_at
-        $expected = <<<EOT
-<database>
-    <table name="archive_table">
-    $archiveTableOutputTags
-    </table>
-
-    $auxiliaryTables
-</database>
-EOT;
-
-        if (class_exists($archiveTableOutputTags) && is_subclass_of($archiveTableOutputTags, Exception::class)) {
-            $this->expectException($archiveTableOutputTags);
-        }
-        $this->assertSchemaTableMatches($expected, $schema, 'archive_table', $message);
-    }
-
-    /**
-     * @param string $expectedTableXml
-     * @param string $schema
-     * @param string $tableName
-     * @param string|null $message
-     *
-     * @return void
-     */
-    protected function assertSchemaTableMatches(string $expectedTableXml, string $schema, string $tableName, ?string $message = null)
-    {
-        $expectedSchema = $this->buildSchema($expectedTableXml);
-        $expectedTable = $expectedSchema->getTable($tableName);
-
-        $actualSchema = $this->buildSchema($schema);
-        $actualTable = $actualSchema->getTable($tableName);
-
-        $diff = TableComparator::computeDiff($actualTable, $expectedTable);
-        if ($diff !== false) {
-            $message = $this->buildTestMessage($message, $diff, $expectedSchema, $actualSchema);
-            $this->fail($message);
-        }
-        $this->expectNotToPerformAssertions();
-    }
-
-    /**
-     * @param string $schema
-     *
-     * @return \Propel\Generator\Model\Database
-     */
-    protected function buildSchema(string $schema): Database
-    {
-        $builder = new QuickBuilder();
-        $builder->setSchema($schema);
-
-        return $builder->getDatabase();
-    }
-
-    /**
-     * @param string $inputMessage
-     * @param \Propel\Generator\Model\Diff\TableDiff $diff
-     * @param \Propel\Generator\Model\Database $expectedSchema
-     * @param \Propel\Generator\Model\Database $actualSchema
-     *
-     * @return string
-     */
-    protected function buildTestMessage(string $inputMessage, TableDiff $diff, Database $expectedSchema, Database $actualSchema)
-    {
-        $inputMessage ??= '';
-        $platform = new MysqlPlatform();
-        $sql = $platform->getModifyTableDDL($diff);
-
-        return <<<EOT
-$inputMessage
-
-Synced archive table not as expected:
-───────────────────────────────────────────────────────
-Diff summary:
-
-$diff
-
-───────────────────────────────────────────────────────
-DDL (MySQL) to turn actual table into expected table:
-
-$sql
-
-───────────────────────────────────────────────────────
-Expected database:
-
-$expectedSchema
-
-───────────────────────────────────────────────────────
-Actual database:
-
-$actualSchema
-───────────────────────────────────────────────────────
-
-EOT;
-    }
-}
diff --git a/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorTest.php b/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorTest.php
index 2299ed21f..d0ea270cf 100644
--- a/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorTest.php
+++ b/tests/Propel/Tests/Generator/Behavior/Archivable/ArchivableBehaviorTest.php
@@ -25,7 +25,7 @@
 use Map\ArchivableTest4TableMap;
 use Map\ArchivableTest5TableMap;
 use Map\MyOldArchivableTest3TableMap;
-use Propel\Generator\Exception\SchemaException;
+use Propel\Generator\Behavior\SyncedTable\SyncedTableException;
 use Propel\Generator\Util\QuickBuilder;
 use Propel\Tests\TestCase;
 use function substr_count;
@@ -219,7 +219,6 @@ public function invalidFkTestDataProvider(): array
      */
     public function testMissingFkParametersThrowsException(string $description, string $parameters)
     {
-        //$this->markTestSkipped();
         $schema = <<<EOF
         <database name="archivable_behavior_test_0">
         
@@ -241,7 +240,7 @@ public function testMissingFkParametersThrowsException(string $description, stri
         $builder = new QuickBuilder();
         $builder->setSchema($schema);
 
-        $this->expectException(SchemaException::class);
+        $this->expectException(SyncedTableException::class);
         $builder->getDatabase();
     }
 
diff --git a/tests/Propel/Tests/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehaviorTest.php b/tests/Propel/Tests/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehaviorTest.php
new file mode 100644
index 000000000..f0d5ef0df
--- /dev/null
+++ b/tests/Propel/Tests/Generator/Behavior/SyncedTable/EmptyColumnAccessorsBehaviorTest.php
@@ -0,0 +1,38 @@
+<?php
+
+/*
+ *	$Id$
+ * This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @license MIT License
+ */
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Tests\Generator\Behavior\SyncedTable;
+
+use Propel\Generator\Behavior\SyncedTable\EmptyColumnAccessorsBehavior;
+use Propel\Tests\TestCase;
+
+/**
+ */
+class EmptyColumnAccessorsBehaviorTest extends TestCase
+{
+    /**
+     * @return void
+     */
+    public function testBuildAccessorNames()
+    {
+        $behavior = new EmptyColumnAccessorsBehavior();
+        $accessors = $this->callMethod($behavior, 'buildAccessorNames', [['a_column', 'le_column']]);
+        $expected = ['getAColumn', 'setAColumn', 'getLeColumn', 'setLeColumn'];
+
+        $this->assertEqualsCanonicalizing($expected, $accessors);
+    }
+}
diff --git a/tests/Propel/Tests/Generator/Behavior/SyncedTable/SyncedTableBehaviorTest.php b/tests/Propel/Tests/Generator/Behavior/SyncedTable/SyncedTableBehaviorTest.php
new file mode 100644
index 000000000..24e81d801
--- /dev/null
+++ b/tests/Propel/Tests/Generator/Behavior/SyncedTable/SyncedTableBehaviorTest.php
@@ -0,0 +1,790 @@
+<?php
+
+/*
+ *	$Id$
+ * This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @license MIT License
+ */
+
+/**
+ * MIT License. This file is part of the Propel package.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Propel\Tests\Generator\Behavior\SyncedTable;
+
+use Exception;
+use Propel\Generator\Exception\EngineException;
+use Propel\Generator\Model\Database;
+use Propel\Generator\Model\Diff\TableComparator;
+use Propel\Generator\Model\Diff\TableDiff;
+use Propel\Generator\Platform\MysqlPlatform;
+use Propel\Generator\Util\QuickBuilder;
+use Propel\Tests\TestCase;
+
+/**
+ */
+class SyncedTableBehaviorTest extends TestCase
+{
+ /**
+  * @return array
+  */
+    public function syncTestDataProvider(): array
+    {
+        return [
+            [
+                // description
+                'Should sync columns',
+                //additional behavior parameters
+                '',
+                // source table columns: some columns
+                '
+                <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
+                <column name="fk_column" type="INTEGER"/>
+                <column name="string_column" type="VARCHAR" size="42"/>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="id" required="true" primaryKey="true" type="INTEGER"/>
+                <column name="fk_column" type="INTEGER"/>
+                <column name="string_column" type="VARCHAR" size="42"/>
+                ',
+            ], [
+                // description
+                'Cannot override columns declared on synced table',
+                //additional behavior parameters
+                '',
+                // source table columns: column with size 8
+                '<column name="string_column" type="VARCHAR" size="8"/>',
+                // synced table input columns: column with size 999
+                '<column name="string_column" type="VARCHAR" size="999"/>',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '<column name="string_column" type="VARCHAR" size="999"/>',
+            ], [
+                // description
+                'Should sync index if requested',
+                //additional behavior parameters
+                '<parameter name="sync_indexes" value="true"/>',
+                // source table columns: column with index
+                '
+                <column name="string_column" type="VARCHAR" size="42"/>
+                <index>
+                    <index-column name="string_column" />
+                </index>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="string_column" type="VARCHAR" size="42"/>
+                <index>
+                    <index-column name="string_column" />
+                </index>
+                ',
+            ], [
+                // description
+                'Syncing index can be enabled',
+                //additional behavior parameters
+                '<parameter name="sync_indexes" value="true"/>',
+                // source table columns: column with index
+                '
+                <column name="string_column" type="VARCHAR" size="42"/>
+                <index>
+                    <index-column name="string_column" />
+                </index>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="string_column" type="VARCHAR" size="42"/>
+                <index name="synced_table_i_811f1f">
+                    <index-column name="string_column" />
+                </index>
+                ',
+            ], [
+                // description
+                'Should sync fk column without relation',
+                //additional behavior parameters
+                '',
+                // source table columns: column with fk
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="fk_table" name="LeFk">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '
+                <table name="fk_table">
+                    <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns
+                '<column name="fk_column" type="INTEGER"/>',
+            ], [
+                // description
+                'Should sync fk column with relation through parameter',
+                //additional behavior parameters
+                '<parameter name="inherit_foreign_key_constraints" value="true"/>',
+                // source table columns: column with fk
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="fk_table" name="LeFk">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '
+                <table name="fk_table">
+                    <column name="id" required="true" primaryKey="true" autoIncrement="true" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="fk_table" name="LeFk">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior can override synced FKs',
+                //additional behavior parameters: inherit fks but override relation "LeName"
+                '
+                <parameter name="inherit_foreign_key_constraints" value="true"/>
+                <parameter-list name="foreign_keys">
+                    <parameter-list-item>
+                        <parameter name="name" value="LeName" />
+                        <parameter name="localColumn" value="fk_column" />
+                        <parameter name="foreignTable" value="new_table" />
+                        <parameter name="foreignColumn" value="id" />
+                    </parameter-list-item>
+                </parameter-list>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="old_table" name="LeName">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '
+                <table name="old_table">
+                    <column name="id" type="INTEGER"/>
+                </table>
+                <table name="new_table">
+                    <column name="id" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="new_table" name="LeName">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior cannot override FKs declared on synced table',
+                //additional behavior parameters: declare fk
+                '
+                <parameter-list name="foreign_keys">
+                    <parameter-list-item>
+                        <parameter name="name" value="LeName" />
+                        <parameter name="localColumn" value="fk_column" />
+                        <parameter name="foreignTable" value="new_table" />
+                        <parameter name="foreignColumn" value="id" />
+                    </parameter-list-item>
+                </parameter-list>
+                ',
+                // source table columns
+                '<column name="fk_column" type="INTEGER"/>',
+                // synced table input columns: fk conflicting with behavior fk
+                '
+                <column name="fk_column" type="INTEGER"/>
+                <foreign-key foreignTable="old_table" name="LeName">
+                    <reference local="fk_column" foreign="id"/>
+                </foreign-key>
+                ',
+                // auxiliary schema data
+                '
+                <table name="old_table">
+                    <column name="id" type="INTEGER"/>
+                </table>
+                <table name="new_table">
+                    <column name="id" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns: expect exception
+                EngineException::class,
+            ], [
+                // description
+                'Behavior does not sync unique indexes by default',
+                //additional behavior parameters
+                '',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <unique>
+                    <unique-column name="col1" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                    <unique-column name="col3" />
+                </unique>
+
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                ',
+            ], [
+                // description
+                'Behavior syncs unique indexes as regular indexes if requested',
+                //additional behavior parameters
+                '<parameter name="sync_unique_as" value="index"/>',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <unique>
+                    <unique-column name="col1" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                    <unique-column name="col3" />
+                </unique>
+
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <index>
+                    <index-column name="col1" />
+                </index>
+                <index>
+                    <index-column name="col2" />
+                    <index-column name="col3" />
+                </index>
+                ',
+            ], [
+                // description
+                'Behavior syncs unique indexes as unique indexes if requested',
+                //additional behavior parameters
+                '<parameter name="sync_unique_as" value="unique"/>',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <unique>
+                    <unique-column name="col1" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                    <unique-column name="col3" />
+                </unique>
+
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <unique>
+                    <unique-column name="col1" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                    <unique-column name="col3" />
+                </unique>
+                ',
+            ], [
+                // description
+                'Behavior can add pk',
+                //additional behavior parameters
+                '<parameter name="add_pk" value="true"/>',
+                // source table columns: column with index
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <column name="col2" type="INTEGER" primaryKey="true"/>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" required="true"/>
+                <column name="col2" type="INTEGER" required="true"/>
+                <column name="id" type="INTEGER" primaryKey="true" autoIncrement="true" required="true"/>
+                ',
+            ], [
+                // description
+                'Behavior can add renamed pk',
+                //additional behavior parameters
+                '<parameter name="add_pk" value="lePk"/>',
+                // source table columns: column with index
+                '',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="lePk" type="INTEGER" primaryKey="true" autoIncrement="true" required="true"/>
+                ',
+            ], [
+                // description
+                'Behavior can add FK',
+                //additional behavior parameters
+                '
+                <parameter-list name="relation">
+                    <parameter-list-item>
+                        <parameter name="onDelete" value="cascade" />
+                    </parameter-list-item>
+                </parameter-list>
+                ',
+                // source table columns: column with index
+                '<column name="col1" type="INTEGER" primaryKey="true"/>',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <foreign-key foreignTable="source_table" onDelete="cascade">
+                    <reference local="col1" foreign="col1"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior can add cascading FK when changing id',
+                //additional behavior parameters
+                '
+                <parameter-list name="relation">
+                    <parameter-list-item>
+                        <parameter name="onDelete" value="cascade" />
+                    </parameter-list-item>
+                </parameter-list>
+                <parameter name="add_pk" value="lePk"/>
+                ',
+                // source table columns: column with index
+                '<column name="col1" type="INTEGER" primaryKey="true"/>',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" required="true"/>
+                <column name="lePk" type="INTEGER" primaryKey="true" autoIncrement="true" required="true"/>
+                <foreign-key foreignTable="source_table" onDelete="cascade">
+                    <reference local="col1" foreign="col1"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior ignores marked columns',
+                //additional behavior parameters
+                '
+                <parameter name="ignore_columns" value="col1,col3"/>
+                <parameter name="sync_indexes" value="true"/>
+                <parameter name="sync_unique_as" value="unique"/>
+                <parameter name="inherit_foreign_key_constraints" value="true"/>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <index>
+                    <index-column name="col1" />
+                </index>
+                <index>
+                    <index-column name="col1" />
+                    <index-column name="col3" />
+                </index>
+                <index>
+                    <index-column name="col1" />
+                    <index-column name="col2" />
+                    <index-column name="col3" />
+                </index>
+                <unique>
+                    <unique-column name="col1" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                </unique>
+                <unique>
+                    <unique-column name="col2" />
+                    <unique-column name="col3" />
+                </unique>
+                <foreign-key foreignTable="fk_table" name="fk12">
+                    <reference local="col1" foreign="col1"/>
+                    <reference local="col2" foreign="col2"/>
+                </foreign-key>
+                <foreign-key foreignTable="fk_table" name="fk2">
+                    <reference local="col2" foreign="col2"/>
+                </foreign-key>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '
+                <table name="fk_table">
+                    <column name="col1" type="INTEGER"/>
+                    <column name="col2" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns
+                '
+                <column name="col2" type="INTEGER" />
+                <index>
+                    <index-column name="col2" />
+                </index>
+                <unique>
+                    <unique-column name="col2" />
+                </unique>
+                <foreign-key foreignTable="fk_table" name="fk2">
+                    <reference local="col2" foreign="col2"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior can sync only PKs',
+                //additional behavior parameters
+                '
+                <parameter name="sync_pk_only" value="true"/>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <column name="col2" type="INTEGER" primaryKey="true" />
+                <column name="col3" type="INTEGER" />
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <column name="col2" type="INTEGER" primaryKey="true" />
+                ',
+            ], [
+                // description
+                'Behavior can sync reduced PKs',
+                //additional behavior parameters
+                '
+                <parameter name="sync_pk_only" value="true"/>
+                <parameter name="ignore_columns" value="col1"/>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <column name="col2" type="INTEGER" primaryKey="true" />
+                <column name="col3" type="INTEGER" />
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col2" type="INTEGER" primaryKey="true"/>
+                ',
+            ], [
+                // description
+                'Behavior can add columns',
+                //additional behavior parameters
+                '
+                <parameter-list name="columns">
+                    <parameter-list-item>
+                        <parameter name="name" value="added_col" />
+                        <parameter name="type" value="varchar" />
+                        <parameter name="size" value="42" />
+                        <parameter name="primaryKey" value="true" />
+                    </parameter-list-item>
+                </parameter-list>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="col1" type="INTEGER" primaryKey="true"/>
+                <column name="added_col" type="VARCHAR" size="42" primaryKey="true"/>
+                ',
+            ], [
+                // description
+                'Behavior prefixes synced columns',
+                //additional behavior parameters
+                '
+                <parameter name="column_prefix" value="asdf_"/>
+                <parameter name="sync_indexes" value="true"/>
+                <parameter name="sync_unique_as" value="unique"/>
+                <parameter name="inherit_foreign_key_constraints" value="true"/>
+                <parameter-list name="relation">
+                    <parameter-list-item>
+                        <parameter name="onDelete" value="cascade" />
+                    </parameter-list-item>
+                </parameter-list>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1" type="INTEGER" primaryKey="true" />
+                <column name="col2" type="INTEGER" />
+                <column name="col3" type="INTEGER" />
+                <index>
+                    <index-column name="col2" />
+                    <index-column name="col3" />
+                </index>
+                <unique>
+                    <unique-column name="col3" />
+                </unique>
+                <foreign-key foreignTable="fk_table" name="fk12">
+                    <reference local="col1" foreign="col1"/>
+                    <reference local="col2" foreign="col2"/>
+                </foreign-key>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '
+                <table name="fk_table">
+                    <column name="col1" type="INTEGER"/>
+                    <column name="col2" type="INTEGER"/>
+                </table>
+                ',
+                // synced output columns
+                '
+                <column name="asdf_col1" type="INTEGER" primaryKey="true" />
+                <column name="asdf_col2" type="INTEGER" />
+                <column name="asdf_col3" type="INTEGER" />
+                <index>
+                    <index-column name="asdf_col2" />
+                    <index-column name="asdf_col3" />
+                </index>
+                <unique>
+                    <unique-column name="asdf_col3" />
+                </unique>
+                <foreign-key foreignTable="fk_table" name="fk12">
+                    <reference local="asdf_col1" foreign="col1"/>
+                    <reference local="asdf_col2" foreign="col2"/>
+                </foreign-key>
+                <foreign-key foreignTable="source_table" onDelete="cascade">
+                    <reference local="asdf_col1" foreign="col1"/>
+                </foreign-key>
+                ',
+            ], [
+                // description
+                'Behavior prefixes synced columns with table name by default',
+                //additional behavior parameters
+                '
+                <parameter name="column_prefix" value="true"/>
+                ',
+                // source table columns: column with fk
+                '
+                <column name="col1"/>
+                ',
+                // synced table input columns
+                '',
+                // auxiliary schema data
+                '',
+                // synced output columns
+                '
+                <column name="source_table_col1" />
+                ',
+            ],
+        ];
+    }
+
+    /**
+     * @dataProvider syncTestDataProvider
+     *
+     * @param string $message
+     * @param string $behaviorAdditions
+     * @param string $sourceTableContentTags
+     * @param string $syncedTableInputTags
+     * @param string $auxiliaryTables
+     * @param string $syncedTableOutputTags
+     *
+     * @return void
+     */
+    public function testSync(
+        string $message,
+        string $behaviorAdditions,
+        string $sourceTableContentTags,
+        string $syncedTableInputTags,
+        string $auxiliaryTables,
+        string $syncedTableOutputTags
+    ) {
+        // source table: some columns
+        // synced table: empty
+        $inputSchemaXml = <<<EOT
+<database>
+    <table name="source_table">
+        <behavior name="synced_table">
+            <parameter name="table_name" value="synced_table"/>
+            <parameter name="sync" value="true"/>
+            $behaviorAdditions
+        </behavior>
+
+        $sourceTableContentTags
+
+    </table>
+    
+    $auxiliaryTables
+
+    <table name="synced_table">$syncedTableInputTags</table>
+</database>
+EOT;
+
+        // synced table: all columns
+        $expectedTableXml = <<<EOT
+<database>
+    <table name="source_table">
+        $sourceTableContentTags
+    </table>
+
+    <table name="synced_table">
+        $syncedTableOutputTags
+    </table>
+
+    $auxiliaryTables
+</database>
+EOT;
+
+        if (class_exists($syncedTableOutputTags) && is_subclass_of($syncedTableOutputTags, Exception::class)) {
+            $this->expectException($syncedTableOutputTags);
+        }
+        $this->assertSchemaTableMatches($expectedTableXml, $inputSchemaXml, 'synced_table', $message);
+    }
+
+    /**
+     * @param string $expectedTableXml
+     * @param string $schema
+     * @param string $tableName
+     * @param string|null $message
+     *
+     * @return void
+     */
+    protected function assertSchemaTableMatches(string $expectedTableXml, string $inputSchemaXml, string $tableName, ?string $message = null)
+    {
+        $expectedSchema = $this->buildSchema($expectedTableXml);
+        $expectedTable = $expectedSchema->getTable($tableName);
+
+        $actualSchema = $this->buildSchema($inputSchemaXml);
+        $actualTable = $actualSchema->getTable($tableName);
+
+        $diff = TableComparator::computeDiff($actualTable, $expectedTable);
+        if ($diff !== false) {
+            $message = $this->buildTestMessage($message, $diff, $expectedSchema, $actualSchema);
+            $this->fail($message);
+        }
+        $this->expectNotToPerformAssertions();
+    }
+
+    /**
+     * @param string $schema
+     *
+     * @return \Propel\Generator\Model\Database
+     */
+    protected function buildSchema(string $schema): Database
+    {
+        $builder = new QuickBuilder();
+        $builder->setSchema($schema);
+
+        return $builder->getDatabase();
+    }
+
+    /**
+     * @param string $inputMessage
+     * @param \Propel\Generator\Model\Diff\TableDiff $diff
+     * @param \Propel\Generator\Model\Database $expectedSchema
+     * @param \Propel\Generator\Model\Database $actualSchema
+     *
+     * @return string
+     */
+    protected function buildTestMessage(string $inputMessage, TableDiff $diff, Database $expectedSchema, Database $actualSchema)
+    {
+        $inputMessage ??= '';
+        $platform = new MysqlPlatform();
+        $sql = $platform->getModifyTableDDL($diff);
+
+        return <<<EOT
+$inputMessage
+
+Synced table not as expected:
+───────────────────────────────────────────────────────
+Diff summary:
+
+$diff
+
+───────────────────────────────────────────────────────
+DDL (MySQL) to turn actual table into expected table:
+
+$sql
+
+───────────────────────────────────────────────────────
+Expected database:
+
+$expectedSchema
+
+───────────────────────────────────────────────────────
+Actual database:
+
+$actualSchema
+───────────────────────────────────────────────────────
+
+EOT;
+    }
+}