Logic Programming and Databases

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NSF Award Search: Award# - Logic Programming and Deductive Databases

I wouldn't say that the techniques aren't popular, but they're not so well known. Lots of folks have downloaded it, but I'm afraid they just aren't "getting it". There are some resources at the Business Rules Community website that you might look into. People are doing it, but not really talking about it as much as one might hope. Lambda the Ultimate. User login Username:. Create new account Request new password. Navigation recent posts. By shahbaz at LtU Forum previous forum topic next forum topic other blogs reads.

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Comment viewing options Flat list - collapsed Flat list - expanded Threaded list - collapsed Threaded list - expanded Date - newest first Date - oldest first 10 comments per page 30 comments per page 50 comments per page 70 comments per page 90 comments per page comments per page comments per page Select your preferred way to display the comments and click "Save settings" to activate your changes. Continuations Several of those things you mentioned rely on continuations for implementations. By johnnyb at Mon, login or register to post comments.

I have read that logic programs are not very efficient This is not true.

By Peter Van Roy at Tue, login or register to post comments. Continuations and Computation Spaces Since both continuations and CTM have been mentioned in this thread, I was wondering about the relationship between continuations and computation spaces. By Chris Rathman at Tue, login or register to post comments.

Actually i think they are Actually i think they are not that far apart. By Felicia Li Svilling at Tue, login or register to post comments.

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Cloning a space vs. By Peter Van Roy at Wed, login or register to post comments. By peter steiner at Tue, login or register to post comments. The major win of a RDBMS here isn't the indexing on a single table, it's the optimisation of multi-table joins together with disk-based storage, and all the other stuff like transactions which you may or may not care about On the other hand, I get frustrated with the lack of deductive power of relational databases.

By chris mungall at Tue, login or register to post comments. Business Rules I wouldn't say that the techniques aren't popular, but they're not so well known. By tblanchard at Tue, login or register to post comments. Active forum topics Advantages of pointfree? By shahbaz at LtU Forum previous forum topic next forum topic other blogs reads Comment viewing options Flat list - collapsed Flat list - expanded Threaded list - collapsed Threaded list - expanded Date - newest first Date - oldest first 10 comments per page 30 comments per page 50 comments per page 70 comments per page 90 comments per page comments per page comments per page Select your preferred way to display the comments and click "Save settings" to activate your changes.

By Peter Van Roy at Tue, login or register to post comments Continuations and Computation Spaces Since both continuations and CTM have been mentioned in this thread, I was wondering about the relationship between continuations and computation spaces. By Chris Rathman at Tue, login or register to post comments Actually i think they are Actually i think they are not that far apart.

Deductive Database Workshops

However important differences between deductive databases and logic programming:. From Wikipedia, the free encyclopedia. However important differences between deductive databases and logic programming: Order sensitivity and procedurality: In Prolog, program execution depends on the order of rules in the program and on the order of parts of rules; these properties are used by programmers to build efficient programs.

In database languages like SQL or Datalog , however, program execution is independent of the order of rules and facts. Special predicates: In Prolog, programmers can directly influence the procedural evaluation of the program with special predicates such as the cut , this has no correspondence in deductive databases.

Function symbols: Logic Programming languages allow function symbols to build up complex symbols. This is not allowed in deductive databases. Tuple -oriented processing: Deductive databases use set-oriented processing while logic programming languages concentrate on one tuple at a time.

The most similar aspect of Prolog is dynamic factbases , which in some implementations SWI, Amzi allow indexing for performance, very similar to indexing of relational tables for performance in SQL.


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Although SQL RDBMS are designed to efficiently work with much large sets of data than a Prolog implementation typically needs, Prolog can at least be used to prototype both the database and process aspects of a system design. See here for a thesis that explores extending relational databases with Prolog inference. Learn more. First 10 Free. Ask Question. Asked 7 years, 2 months ago. Active 3 years, 2 months ago.

Viewed 2k times. Alex Miller This excerpt should address your question: Nevertheless, coupling Prolog and relational databases show some dissonances. StasM 8, 3 3 gold badges 42 42 silver badges 86 86 bronze badges. Tegiri Nenashi Tegiri Nenashi 2, 2 2 gold badges 14 14 silver badges 18 18 bronze badges. John Watts John Watts 7, 1 1 gold badge 24 24 silver badges 30 30 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook.