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Prolog isn't really about pure logic constructs.

Prolog is really a database query language. Similar to SQL or GraphQL. Prolog failed because it never got integrated into a serious enterprise data storage engine. (Most Prolog implementations are just text files and in-memory hash tables.)

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I thought Datalog did get integrated into some "proper" storage engines. It is a subset of Prolog, and expressively more like SQL, and designed for query optimisation etc. It was certainly taken seriously for databases for quite a while.

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