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Defining derivations
104 PowerDesigner
4 Type an ID and select a base type.
5 Click OK.
Deriving by restriction
You derive a simple type or a complex type by restriction when you want to
restrict the values of their base type.
Restriction on a simple type
The property sheet of a simple type restriction displays several specific
pages:
♦ General
♦ Detail
♦ Enumerations
♦ Patterns
Detail, Enumerations and Patterns pages are described in the next section,
Defining restriction facets.