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What is the difference between Wikibase and Wikidata?Edit

Wikibase is a suite of knowledge-base software for managing linked open data, originally written for and still used by the Wikidata project.

Wikidata is the largest instance of Wikibase, a free knowledge base that anyone can edit. Its data is used by Wikipedia, by its sister projects and by anyone else who wants to make use of a large amount of open general-purpose data.

Is there a list of Wikibase instances?Edit

Although there’s no single canonical list, on our Showcase page we highlight several notable instances. For more comprehensive information you can check out the voluntary Wikibase registry and this list of federated query endpoints.

Software and functionalityEdit

How can I install Wikibase on my own system?Edit

There are currently two options for installing Wikibase.

Where can I find more info about the query service?Edit

Here’s Wikidata’s query service manual and some SPARQL examples.

How does federation work?Edit

Check out our federation page.

How can I get data into Wikibase?Edit

Check out our import tools page.

Does Wikibase ship with a web API (like api.php) for remote access?Edit

Wikibase extends the standard MediaWiki action API with modules such as action=wbsetsitelink and query modules such as action=query&prop=pageterms. You access these modules via api.php like the rest of the API and you can use d:Special:ApiSandbox to explore the API. Some Wikimedia wikis run only the Wikibase client, while runs the full software.

Where can I find the source code?Edit

Check out our developer resources. An updated programmer's guide and coding conventions are in the works!

Technical issuesEdit

We cover many technical topics in our maintenance guide, the GitHub repository for our Docker images and our manual install documentation. Below you'll find help on some specific issues reported by users of Wikibase.


View open issues in our issue tracker:

Query serviceEdit

Why doesn't the query service update?Edit

If you find yourself re-importing RDF files to make items show up in the query service, even when your updater is running correctly, you're probably suffering from the MAX_DAYS issue.

Try running your updater with the following option, setting "DAYS" higher than 30: -DwikibaseMaxDaysBack=DAYS

See this Blazegraph thread for more detail.

What measures can I take to protect my Wikibase instance against spam?Edit

In particular:

Further helpEdit

How can I ask more detailed questions about Wikibase?Edit

Join the mailing list!

Where can I report issues or problems with Wikibase?Edit

You’re welcome to raise an issue on our Phabricator instance, where you can log in with your Wikimedia unified account or a Wikitech developer account.

Before you do, you may want to review the bug report guidelines.

How can I get third-party technical support for my Wikibase instance?Edit

Take a look at the third-party consultants list. (This is a public wiki page; inclusion of a given provider doesn’t constitute an official endorsement by the Wikibase team.)