What is a disjoint less constraint? – McqOptions

MCQOPTIONS

1.	What is a disjoint less constraint?
A.	An entity can be joined with another entity in the same level entity set.
B.	The database must contain an unmatched foreign key value.
C.	The same entity may belong to more than one level.
D.	It requires that an entity belongs to no more than one level entity set.
Answer» E.

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