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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