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Logic programming has proven its merits in a variety of
application areas including diagnostic expert systems, natural
language processing and agent-based control systems. Prolog, as a
logic programming language, has lots of advantages over more
conventional procedural ones but it also has some drawbacks.
Performance is the main problem this type of languages face. On the
other hand Relational Databases are all about performance and
surprisingly have lots of similarities with logic programming
languages. Joining together this two fields resulted in a new one
that we call Deductive Databases and that is what we’ll discuss in
this article.