Object Constraint Language

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Object Constraint 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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No references found			The UML specification recommends the Object Constraint Language (OCL) for formal expression of such rules, but OCL is simply too mathematical in nature to be used for validation by nontechnical domain experts. Information modeling and relational databases by Halpin, Terry; Morgan, Tony / Database and Network Journal The areas are Diagram Interchange, Object Constraint Language (OCL), Infrastructure, and Superstructure. UML 2.0 -- a major revision of the industries de facto software ... by Bissell, Andrew / Software World Topics include: Meta Object Facility (MOF[TM]), UML([R])& Profiles, Queries/Views/Transformations (QVT), Object Constraint Language (OCL), and Ontology Definition Metamodel (ODM). OMG and Eclipse Announce Program for Second Day of the Symposia On ... by Business Wire			Obfuscated C Contest obfuscation obfuscator obi-wan error obia Obiazannye Krestiane Obichkin, Gennadii Obichkin, Gennadii Dmitrievich Obidicut Obigarm Obihiro Obil Obion County Obitochnaia Spit OBJ OBJ0 OBJ2 OBJ3 Object object browser object bus Object CHILL object code Object Compatibility Standard object computer Object Constraint Language object contrast Object Data Management Group object database Object Database Management Group object deck Object Exchange object glass object identifier object language object lens object lesson object library Object Linking and Embedding Object Lisp Object Management Architecture Object Management Group Object Management Group object model Object management system object model Object Modelling Technique object module Object Oberon Object of Law object orientated object oriented			object browser object bus Object case Object CHILL Object CHILL Object CHILL Object CHILL object choice Object Class Object Class Code Object Class Table Object Classification Object Client-Server Framework object code object code Object code file format Object Code Insertion Object Code Only Object Collaboration Framework Object Communication Environment for Arbitrary Network Object Compatibility Standard Object Component Desktop Object composition Object Composition Petri-Net object computer Object Computing, Inc. object constancy object constancy object constancy object constancy Object Constraint Language Object Constraint Language Environment object contrast Object copy Object Data Management Group Object Data Management Group Object Data Manager Object Data Manager Editor Object Data Mining Query Language object data model Object Data Type Object database Object database Object database Object Database Management Group Object Database Management Group Object Database Management System Object Database Manager Object Database Query Language Object databases object DBMS object deck Object Definition Language Object Description Language Object Design Language Object Desktop Network Object Discovery Agent Object Distinguished Name Object Distribution Environment

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