An organization needs to maintain database having five attributes These

Duration: 8 min

Q4545

UGC NET 2019

An organization maintains a database relation R(A, B, C, D, E) whose attributes take atomic values. The functional-dependency set is F = {A→BC, D→E, BC→D, A→D}.

Which of the following is a minimal cover F′ of F?

  1. A.

    F′=A→B,A→C,BC→D,D→EF′={A→B,A→C,BC→D,D→E}

  2. B.

    F′=A→BC,B→D,D→EF′={A→BC,B→D,D→E}

  3. C.

    F′=A→B,A→C,A→D,D→EF′={A→B,A→C,A→D,D→E}

  4. D.

    F′=A→B,A→C,B→D,C→D,D→EF′={A→B,A→C,B→D,C→D,D→E}

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