Note that sui-generis database rights are expressly excluded from the WMF version. The Wikimedia terms of use include a specific waiver: "Where you own Sui Gen

Note that sui-generis database rights are expressly excluded from the WMF version. The Wikimedia terms of use include a specific waiver: "Where you own Sui Generis Database Rights covered by CC BY-SA 4.0, you waive these rights. As an example, this means facts you contribute to the projects may be reused freely without attribution." https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use https://foundation.wikimedia.org/wiki/Policy:Terms_of_Use This is of course to make it easer for commercial re-users to not attribute and share alike. The change in database rights were one of the key reasons why the move to 4.0 was delayed for so long. Without the waiver, it would have put a legal question mark over the data pipeline leading from Wikipedia to Wikidata and thence to Google et al. See Jimmy Wales answer here: https://www.youtube.com/watch?v=Zpof5J6jjZ4&t=3738s https://www.youtube.com/watch?v=Zpof5J6jjZ4&t=3738s