SA automatically creates an access path for the Primary Key Definition popup based on the PK components specified in the attribute list. By default, the name of the primary key access path is [entity name]_PK. You can rename this access path.

The list of attributes in the primary key access path works in conjunction with the PK check box in the attribute grid. You can change the components of the primary key either by selecting or clearing PK, or by adding and removing attributes from the list of attributes in the key.

The Primary Key access path cannot be deleted, even if it has no attributes.