Prolog is a turing-complete programming language suitable for general programming tasks. Datalog is a subset of Prolog that is suitable for use as a database/qu

Prolog is a turing-complete programming language suitable for general programming tasks. Datalog is a subset of Prolog that is suitable for use as a database/query system. The main difference between datalog and Neo4J is that datalog allows for predicates of arbitrary arity.