Subtypes should be used when:
A) there are attributes that apply to some but not all instances of an entity type.
B) supertypes relate to objects outside the business.
C) the instances of a subtype do not participate in a relationship that is unique to that subtype.
D) none of the above.

Question

Quizplus · Accepted Answer

Subtypes should be used when there are attributes that apply to some but not all instances of an entity type. This allows for more specific and accurate data modeling.

Subtypes Should Be Used When