nbarskiy3579 nbarskiy3579
  • 29-11-2022
  • Engineering
contestada

A set of attributes X is called closed (with respect to a given set of functional dependencies) if X* = X. Consider a relation with schema R(A, B,C, D) and an unknown set of functional dependencies. For each closed attribute set below, give a set of functional dependencies that is consistent with it.

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