I found it for its Datalog implementation. https://en.wikipedia.org/wiki/Datalog https://en.wikipedia.org/wiki/Datalog and http://www.learndatalogtoday.org/ ht

I found it for its Datalog implementation. https://en.wikipedia.org/wiki/Datalog https://en.wikipedia.org/wiki/Datalog and http://www.learndatalogtoday.org/ http://www.learndatalogtoday.org/.