> notations which are no longer a subset of ISO Prolog and therefore also not Datalog. This is false. Datalog is not (or no longer) about prolog like syntax, D

> notations which are no longer a subset of ISO Prolog and therefore also not Datalog. This is false. Datalog is not (or no longer) about prolog like syntax, Datalog as used nowadays in research, describes the semantics for a logic which includes conjunctive queries and recursion, often denoted as an abstract syntax consisting of rules with a body and head, no ascii syntax attached. > Thus, they also do not immediately benefit from recent advances in Prolog systems in that they cannot directly be parsed and interpreted by them. This is like saying, that Javascript can benefit from updates to the Java virtual machine. Prolog and Datalog require radically different evaluation strategies and implementations.