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Object Constraint Language, The: Getting Your Models Ready for MDA, Second Edition by Anneke Kleppe, Jos Warmer

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Appendix A. Glossary

Glossary

Change event

An event that is generated when one or more attributes or associations change value according to an expression.

Context

The element specified in one of the UML diagrams for which the OCL expression is defined.

Context definition

The text or symbol that defines the relationship between an OCL expression and the element in the part of the model that is specified by UML diagrams.

Contextual instance

An instance of the contextual type of an OCL expression.

Contextual type

The type of the object for which an OCL expression will be evaluated.

Contract

A description of the services that are provided by an object using pre- and postconditions.

Derivation rule

A rule that specifies the value of a derived element.

Derived class ...

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