UML14 — Operations and Constraints Missing from "Physical" Metamodels

The "physical" metamodel should include the OCL constraints and operations
defined in the UML Specification. This has been done in the MOF 1.3
specification. The operations provide valuable capabilities and should be
part of the standard UML facility interfaces. Making the operations part of
the "physical" metamodel allows them to be used when defining new
constraints in extension metamodels, such as in CWM.

Recommendation: Add the specification's constraints and operations to the
"physical" metamodel.

Note that adding constraints and operations will affect IDL, but it will not
affect XMI DTDs.

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