Q16

MCQ1 mark, −0.33

The following functional dependencies hold true for the relational schema $R\left \{V,W,X,Y,Z \right \}$ : $V \rightarrow W$ $VW \rightarrow X$ $Y \rightarrow VX$ $Y \rightarrow Z$ Which of the following is irreducible equivalent for this set of functional dependencies?

(A)

$V \rightarrow W$ $V \rightarrow X$ $Y \rightarrow V$ $Y \rightarrow Z$

(B)

$V \rightarrow W$ $W \rightarrow X$ $Y \rightarrow V$ $Y \rightarrow Z$

(C)

$V \rightarrow W$ $V \rightarrow X$ $Y \rightarrow V$ $Y \rightarrow X$ $Y \rightarrow Z$

(D)

$V \rightarrow W$ $W \rightarrow X$ $Y \rightarrow V$ $Y \rightarrow X$ $Y \rightarrow Z$

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