Performing key property operations

All the key properties of a relation or class combined form a unique key for that relation or class.

You can perform the following key property operations:

• Add a class reference to the key of a relation
• Add a relation or class non-key property to the key of the relation or class
• Modify the key property of a relation or class
• Remove a class reference from the key of a relation
• Remove a property from the key of a relation or class