Defining O/R Mapping

When you generate an OOM from a PDM or a PDM from an OOM, the default O/R mapping can be generated and saved in the OOM. You can also manually define complex O/R mapping.

The following diagram shows the Attributes Mapping page of class Customer. It was generated from a PDM.

For O/R mapping, PowerDesigner supports:

Mapping of a class to one or several tables or views
Mapping of an attribute to a column or an expression
Select, insert, update and delete queries for a class
Query for an operation
Mapping of an association to a table or a reference
Select, insert and delete queries for an association