declarative language
<language> Any relational language or functional language. These kinds of
programming language describe relationships between variables in terms of
functions or inference rules, and the language executor (interpreter or
compiler) applies some fixed algorithm to these relations to produce a result.
Declarative languages contrast with imperative languages which specify explicit
manipulation of the computer's internal state; or procedural languages which
specify an explicit sequence of steps to follow.
The most common examples of declarative languages are logic programming
languages such as Prolog and functional languages like Haskell.
See also production system.
(2004-05-17)
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