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A comment on The Art of Prolog, Second Edition. Parent comment
You're probably looking for Datalog. The Wikipedia topic has a list of systems that support it: https://en.m.wikipedia.org/wiki/Datalog
Also, I found that AllegroGraph is a production graph database that supports Prolog queries... I don't think you load it with Prolog syntax, though--probably RDF triples instead.
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You're probably looking for Datalog. The Wikipedia topic has a list of systems that support it: https://en.m.wikipedia.org/wiki/Datalog
Also, I found that AllegroGraph is a production graph database that supports Prolog queries... I don't think you load it with Prolog syntax, though--probably RDF triples instead.