When an entity instance must be a member of only one subtype, it is wh – McqOptions

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1.	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» B. Disjoint with partial specialization

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