Chapter 6 Working with PDMs

Checking a PDM

You can use the Check Model command to check the validity of a PDM at any time. A valid PDM conforms to the following rules:

Each object name must be unique
Model constraints must be compatible with database constraints
Each table must have at least one column
Each index must have a column
Each reference must have at least one column pair

Apply Check model before generating a database
It is recommended that you start database generation by checking the validity of the PDM. If an error is found, the database (or database generation script) can not be generated.