Talk:Wikibase/FAQ

Federating properties
After following the FAQ instructions on federating properties, when I try to add a statement, I can't seem to access any properties at all. What do I have to do? Do I have to request them using an API?

Will Hanley (talk) 21:23, 18 February 2022 (UTC)


 * referencing post on mailing list. -Mohammed Sadat (WMDE) (talk) 14:14, 1 March 2022 (UTC)


 * Hi Will! If you have it configured correctly then it should all just work, so my guess would be that something is not configured correctly!
 * What do you see if you go to the `Special:ListProperties` page?
 * How are you running Wikibase?  ·addshore·  talk to me! 09:47, 1 March 2022 (UTC)

Wikidata schema
Are there any document that contains the mapping of Wikidata Data Model into a Wikibase database schema? I want know, for example, if Item is mapped to one relational table of MariaDB and Property to another one or if both are mapped to only one table (as Entity), if ItemDescriptions has a separate table, how many tables support the Statement structure, including references and qualifiers, which column datatype is used to represent an IRI, and so on. Or even if the entire model is stored as a JSON document, one for each entity.

https://www.mediawiki.org/wiki/Wikibase/DataModel https://doc.wikimedia.org/Wikibase/master/php/md_docs_topics_json.html