It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.

An action assertion must include which of the following?

A. Anchor object

B. Action

C. Corresponding object

D. All of the above

An oval represents which of the following in an EER?

A. Attribute

B. Entity

C. Optional One

D. Relationship

Inheritance is which of the following?

A. When a supertype entity inherits values of the subtype attribute

B. When a subtype entity inherits values of the supertype attribute

C. When a supertype entity inherits values of another supertype attribute

D. When a subtype entity inherits values of another subtype attribute

When an entity instance must be a member of only one subtype, it is which of the following?

A. Disjoint with total specialization

B. Disjoint with partial specialization

C. Overlap with total specialization

D. Overlap with partial specialization