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Vienna definition language

   Also found in: Acronyms 0.03 sec.
Vienna definition language [vē′en·ə ‚def·ə′nish·ən ‚laŋ·gwij]
(computer science)
A language for defining the syntax and semantics of programming languages; consists of a syntactic metalanguage for defining the syntax of programming and data structures, and a semantic metalanguage which specifies programming language semantics operationally in terms of the computations to which programs give rise during execution.
Vienna Definition Language - (VDL) IBM Vienna Labs. A language for formal, algebraic definition via operational semantics. Used to specify the semantics of PL/I. See also VDM.

["The Vienna Definition Language", P. Wegner, ACM Comp Surveys 4(1):5-63 (Mar 1972)].


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