Defining derivations

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.

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PowerDesigner

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Image 116
Sybase XML manual Deriving by restriction, Restriction on a simple type, 104