Sybase PowerDesigner XML User Manual page 122

Defining derivations
110
If you select Embedded type, the base type disappears and a simple type
is created in the schema within the current simple type. Click Apply, and
then the Properties tool beside the Embedded type box, to define a
derivation and a base type for the embedded simple type.
6 Click the Detail tab to display the Detail page.
7 Type a value in a facet box.
8 Click Apply.
9 Click the Properties tool beside the facet box.
The facet property sheet appears (the length property sheet in the
example).
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