Unified Modeling Language:Extensibility
New constructs may be added to address new development issues
Three extensibility mechanisms
- constraints
- tagged values
- stereotypesStereotype Person for instances of meta class Class[1] A Person can be either female or malepersonGender : enum { female, male }
The meta model may also be extended
- results in a new notation
- may be incompatible with UML-compliant tools