Compare with Wikibase tabular data model

[nichtich]

The Wikibase software supports managing tabular data. Data is mainly collected on Wikimedia Commons, for instance tables with population data.

Wikibase Tabular Data was based on Tabular Data Resource so its likely compatible with some restrictions.

[nichtich]

Field	Data Package	Wikibase
name	required	implicitly by Wikibase page name
description	optional (plain string)	optional (localized strings)
data	required	required (subfield fields, see below)
licenses	- (there is licenses)	required (plain string CC0-1.0)
schema	optional	required (array of arrays)
sources	optional (array of objects)	optional (Wiki markup)

Other optional data Package fields (title, bytes...) are not supported.

Field	Table Schema Fields	Wikibase
name	required	required
type	required	required (differences below)
title	optional (plain string)	optional (localized string)

Wikibase supports data types:

• number subset of Table Schema (no NaN)
• boolean same as Table Schema
• string same as Table Schema but limited to 400 characters at most and not including \n or \t.
• localized not supported by Table Schema

Special value null can always be used for missing numbers where Table Schema uses special strings.

[sapetti9]

Shall we add a comparison with Wikibase Tabular Data to the Guides, similarly to what we did for CSVW: https://datapackage.org/guides/csvw-data-package/ ?

[nichtich]

If you are ok with it, I can extend the text and add a PR to another file at https://github.com/frictionlessdata/datapackage/tree/main/content/docs/guides