6. The degree of a relationship refers to the number of entity classes in the relationship.

A. True
B. False

7. Entities use identifiers while tables use keys.

A. True
B. False

8. Composite identifiers consist of two or more attributes.

A. True
B. False

9. When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships.

A. True
B. False

10. A subtype entity is a special case of another entity called a supertype entity.

A. True
B. False