Examveda
Examveda

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

Answer: Option A

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Related Questions on ER Model and Business Rules

A subtype discriminator is which of the following?

A. An attribute of the supertype whose values determine the subtype

B. An attribute of the subtype whose values determine the supertype

C. An attribute of the supertype whose values determine the supertype

D. An attribute of the subtype whose values determine the subtype