Which of the following specifies that if an entity instance of the supertype is a member of one subtype it cannot simultaneously be a member of any other subtype?
A)total specialization rule
B)partial specialization rule
C)disjoint rule
D)overlap rule

Question

Quizplus · Accepted Answer

The disjoint rule specifies that an entity instance of the supertype can only be a member of one subtype and cannot simultaneously be a member of any other subtype. The total specialization rule requires that every entity instance of the supertype must be a member of at least one subtype, while the partial specialization rule allows some entity instances of the supertype to not belong to any subtype. The overlap rule allows entity instances of the supertype to belong to more than one subtype simultaneously.

Which of the Following Specifies That If an Entity Instance