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The only reason for the existence of relations is to store instances of functional dependencies.

  • A.True
  • B.False

Answer: A

Correct answer: True

A relation exists to record which values go with which, and every such association is a functional dependency - the key determines the non-key attributes. Seen that way, storing instances of functional dependencies is what a relation does, and a relation that stores dependencies belonging to more than one theme is exactly the one that suffers modification anomalies.

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