Hello everyone, This is a breaking change announcement relevant for Wikidata users working with RDF output.
This update will affect the way EntitySchema values are represented in Wikidata’s RDF output. To align with the naming conventions used for other entity type references, we are updating the wikibase:propertyType value for properties with data type EntitySchema from: http://wikiba.se/ontology#EntitySchema to http://wikiba.se/ontology#WikibaseEntitySchema The former URI may one day be reused as the rdf:type of EntitySchema entities when they are exported to RDF. (Compare, for example, wd:Q42 a wikibase:Item vs. wd:P31 wikibase:propertyType wikibase:WikibaseItem) Additionally, the EntitySchema property type URI will now be defined in the Wikibase ontology at http://wikiba.se/ontology. This change brings consistency with other entity types (Items, Properties, Lexemes, etc.) and will simplify query writing and RDF processing. Rollout Timeline: - Test Wikidata: The updated configuration is now deployed on Test Wikidata. - Full Rollout on Wikidata: The change will go live on Wikidata on 24 April 2025 following the two-week advance notice as required by our Stable Interface Policy. Impact: - Users who get the data type of properties via RDF, or who filter for EntitySchema-type properties in SPARQL queries, will need to change the value they look for. If you have any questions or concerns about this change, please don’t hesitate to reach out to us in this ticket (T371196 <https://phabricator.wikimedia.org/T371196>). Cheers, -- Zita U. Zage Intern, Wikidata Software Communication Team Wikimedia Deutschland e. V. | Tempelhofer Ufer 23-24 | 10963 Berlin Phone: +49 (0) 30 577 116 2466 https://wikimedia.de Grab a spot in my calendar for a chat: cal.com/zuz <https://calendar.google.com/calendar/u/0?cid=eml0YS56YWdlQHdpa2ltZWRpYS5kZQ>. A lot is happening around Wikidata - Keep up to date! <https://www.wikidata.org/wiki/Wikidata:Status_updates> Current news and exciting stories about Wikimedia, Wikipedia and Free Knowledge in our newsletter (in German): Subscribe now <https://www.wikimedia.de/newsletter/>. Imagine a world in which every single human being can freely share in the sum of all knowledge. Help us to achieve our vision! https://spenden.wikimedia.de Wikimedia Deutschland — Gesellschaft zur Förderung Freien Wissens e. V. Eingetragen im Vereinsregister des Amtsgerichts Charlottenburg, VR 23855 B. Als gemeinnützig anerkannt durch das Finanzamt für Körperschaften I Berlin, Steuernummer 27/029/42207. Geschäftsführende Vorstände: Franziska Heine, Dr. Christian Humborg
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