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Generating OOM objects to a PDM
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Generating OOM objects to a PDM
When you generate a Physical Data Model (PDM) from an Object-Oriented
Model (OOM), PowerDesigner translates OOM objects and data types to
PDM objects and data types supported by the current DBMS.
The current object language of an OOM has no effect on the generation to a
PDM.
Translating OOM objects into PDM objects
PDM generation translates OOM objects into physical objects.
OOM object
PDM object after generation
Domain
Domain
Class
Table (only if the Persistent and Generate checkboxes are
selected in the class property sheet). The cardinality of a class
becomes the number of records of a table
Interface
Not translated
Attribute
Column
Identifier
Identifier
Operation
Stored-Procedure
Association
Reference or table
Dependency
Not translated
Realization
Not translated
Generalization
Reference
For a class to become an table the Persistent and Generate checkboxes must
be selected in the property sheet of the class.
The cardinality of a class becomes the number of records of a table.
If the association has a many-to-many cardinality, that is, where both roles of
the association have the * sign selected in their multiplicity dropdown
listboxes, then the association is translated into a table in the generated PDM.
If it has any other cardinality, that is, where one of the roles of the association
does not have an * selected in its multiplicity dropdown listbox, then the
association becomes a reference.
A role name becomes a migrated foreign key after PDM generation.
Generating from
classes
Generating from
associations
Содержание Powerdesigner 7.5
Страница 1: ...OBJECT ORIENTED MODEL User s Guide POWERDESIGNER 7 5...
Страница 8: ...viii...
Страница 22: ...Defining OOM properties 12...
Страница 97: ...Chapter 2 Building an Object Oriented Model 87 4 Modify the operation display preferences 5 Click OK...
Страница 144: ...Defining check parameters 134...
Страница 208: ...Generating for XML 198 6 Click OK An XML file is generated with the file extension xml...
Страница 210: ...Customizing scripts 200...
Страница 224: ...Generating a CDM from an OOM 214...
Страница 238: ...Generating a PDM from an OOM 228...
Страница 260: ...Object language editor categories 250...
Страница 268: ...Applying business rules to objects 258...
Страница 288: ...278...