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NRM Q.4

0. In a schema with attributes A, B, C, D, and E following set of functional dependencies are given
A --> B
A -->C
CD —>E
B --> D
E —> A
Which of the following functional dependencies is implied by the above set.

  • Option : B
  • Explanation : CD—>A {CD —>E;E —> A; E —>C}
    CD —> C
    BC —> CD
    B—>D;
    CD—>E;
    E—>A;
    A—>C
    AC—>BC:
    A—>B:
    A—>C
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