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Relationships among relationships can be represented in an-E-R model using

  • A.Aggregation
  • B.Association
  • C.Weak entity sets
  • D.Weak relationship sets

Answer: A

Correct answer: Aggregation

Aggregation treats a relationship as though it were an entity, so that a further relationship can be attached to it. Without it there is no way to relate one relationship to another.

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