Object Constraint Language


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Object Constraint Language

(language)
(OCL) A formal specification language extension to UML. The Object Constraint Language is a precise text language that provides constraint and object query expressions on an object-oriented model that cannot otherwise be expressed by diagrammatic notation.

OCL supplements UML by providing expressions that have neither the ambiguities of natural language nor the inherent difficulty of using complex mathematics.

OCL is a descendent of Syntropy, a second-generation object-oriented analysis and design method. The OCL 1.4 definition specified a constraint language. In OCL 2.0, the definition has been extended to include general object query language definitions.

OMG UML Home.

Rational UML Resource Center.

OCL 2.0 Submission to UML.
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References in periodicals archive ?
The Object Constraint Language - Precise Modeling with UML.
The three RFPs cover UML Infrastructure, UML Superstructure, and Object Constraint Language (OCL).
Object Constraint Language, OCL, an important part of UML, is fully supported in the XMA to make it possible for an application designer to not only design detailed models with constraints but also to execute them.