Chapter 6 Generating from a Conceptual Data Model
PDM generation converts conceptual objects into physical objects as follows:
| CDM objects | Generated object in a PDM |
|---|---|
| Entity | Table |
| Entity attribute | Table column |
| Primary identifier | Primary or foreign key depending on independent or dependent relationship |
| Identifier | Alternate key |
| Relationship | Reference |
Changing the name of a column automatically
Two columns in the same table cannot have the same name. If column names conflict due to foreign key migration, PowerDesigner automatically renames the migrated columns. The new name is composed of the first three letters of the original entity name followed by the code of the attribute.
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