Modify the tables and add fields

In this submission, the original redundant table `t_user_repository`
was deleted, and the current table `t_user_star_repository` was added
to reflect the collection relationship.

And now two fields are added to the repository table, `https_url` for the
link under the https protocol and `ssh_url` for the link under the ssh
protocol.

See #46 and #48.

database/constraint/all_column_constraint.sql

@@ -6,7 +6,6 @@ ADD CONSTRAINT pk_repository PRIMARY KEY (id);
 ALTER TABLE ONLY public.t_user
 ADD CONSTRAINT pk_user_table PRIMARY KEY (id);
 
--- The constraint of t_user_repository is not necessary,
--- as the primary key is already unique.
-ALTER TABLE ONLY public.t_user_repository
-ADD CONSTRAINT pk_user_repository PRIMARY KEY (id);
+-- The constraint of t_user_star_repository is added to the table.
+ALTER TABLE ONLY public.t_user_star_repository
+ADD CONSTRAINT pk_user_star_repository PRIMARY KEY (id);

database/table/t_repository.sql

@@ -7,6 +7,8 @@ CREATE TABLE public.t_repository (
   star integer DEFAULT 0 NOT NULL,
   fork integer DEFAULT 0 NOT NULL,
   watcher integer DEFAULT 0 NOT NULL,
+  https_url character varying(1024) NOT NULL,
+  ssh_url character varying(1024) NOT NULL,
   gmt_created timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
   gmt_updated timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
   gmt_deleted timestamp without time zone
@@ -19,6 +21,11 @@ COMMENT ON COLUMN public.t_repository.repository_name IS 'Name of the repository
 COMMENT ON COLUMN public.t_repository.repository_description IS 'Description of the repository.';
 COMMENT ON COLUMN public.t_repository.is_private IS 'Indicates if the repository is private.';
 COMMENT ON COLUMN public.t_repository.user_id IS 'ID of the user who owns the repository.';
+COMMENT ON COLUMN public.t_repository.star IS 'Number of stars the repository has received.';
+COMMENT ON COLUMN public.t_repository.fork IS 'Number of times the repository has been forked.';
+COMMENT ON COLUMN public.t_repository.watcher IS 'Number of users watching the repository.';
+COMMENT ON COLUMN public.t_repository.https_url IS 'Repository link under HTTPS protocol.';
+COMMENT ON COLUMN public.t_repository.ssh_url IS 'Repository link under SSH protocol.';
 COMMENT ON COLUMN public.t_repository.gmt_created IS 'Timestamp when the repository was created.';
 COMMENT ON COLUMN public.t_repository.gmt_updated IS 'Timestamp when the repository was last updated.';
 COMMENT ON COLUMN public.t_repository.gmt_deleted IS 'Timestamp when the repository was deleted.

database/table/t_user_star_repository.sql

@@ -0,0 +1,17 @@
+CREATE TABLE public.t_user_star_repository (
+  id bigint NOT NULL,
+  user_id bigint NOT NULL,
+  repository_id bigint NOT NULL,
+  gmt_created timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
+  gmt_updated timestamp without time zone DEFAULT CURRENT_TIMESTAMP NOT NULL,
+  gmt_deleted timestamp without time zone
+);
+
+COMMENT ON TABLE public.t_user_star_repository IS 'Table for storing relationships between users and starred repositories.';
+
+COMMENT ON COLUMN public.t_user_star_repository.id IS 'Primary key of the user_star_repository table.';
+COMMENT ON COLUMN public.t_user_star_repository.user_id IS 'ID of the user who starred the repository.';
+COMMENT ON COLUMN public.t_user_star_repository.repository_id IS 'ID of the repository that has been starred.';
+COMMENT ON COLUMN public.t_user_star_repository.gmt_created IS 'Timestamp when the relationship was created.';
+COMMENT ON COLUMN public.t_user_star_repository.gmt_updated IS 'Timestamp when the relationship was last updated.';
+COMMENT ON COLUMN public.t_user_star_repository.gmt_deleted IS 'Timestamp when the relationship was deleted. If set to NULL, it indicates that this relationship has not been deleted.';