relational language

Computing Dictionary

relational language definition

language
Any kind of programming language that specifies output in terms of some property and some arguments. For example, if Tom has two brothers, Dick and Harry, a relational language will respond to the query "Who is Tom's brother?" with either Dick or Harry. Notice that unlike functional languages, relational languages do not require a unique output for each predicate/argument pair. Prolog is the best known relational language.
(2004-05-17)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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