Inability to enforce referential integrity is a disadvantage of the combination of entity sets without generalization.

Question

Quizplus · Accepted Answer

Combined entity key posting posts keys from two or more separate tables into the same field of a related table and has the disadvantage of disabling enforcement of referential integrity for the relationships with that field. Combination of entity sets without generalization enables referential integrity enforcement.

Inability to Enforce Referential Integrity Is a Disadvantage of the Combination