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Chapter 1 XML Model Basics
XSM User's Guide 13
Selecting extended model definitions at model creation
Extended model definitions (.XEM files) provide means for customizing and
extending PowerDesigner metaclasses, parameters and generation. Extended
model definitions are typed like models in PowerDesigner. You create an
extended model definition for a specific type of model and you cannot share
these files between heterogeneous models.
When you create a new XML model, or when you reverse engineer into a
new XML model, you can select one or several extended model definitions
and attach them to the model from the New dialog box.
You can choose one of the following options:
Option Description
Share Current extended model definition constantly refers to the extended
model definition stored in the Resource Files\Extended Model
Definitions directory. Any changes made to the extended model
definition are shared by all linked XEM
Copy Current extended model definition is a unique copy of the extended
model definition stored in the Resource Files\Extended Model
Definitions directory. The current extended model definition is
independent of the original one, so modifications made to the
extended model definition in the Resource Files\Extended Model
Definitions directory are not available to the copied XEM. This one
is saved with the XML model and cannot be used without it