Q78

MCQ2 marks, −0.5

Consider a relation scheme $R = (A, B, C, D, E, H)$ on which the following functional dependencies hold: { $A \rightarrow B$ , $BC \rightarrow D$ , $E \rightarrow C$ , $D \rightarrow A$ }. What are the candidate keys R?

(A)

$\text{AE, BE}$

(B)

$\text{AE, BE, DE}$

(C)

$\text{AEH, BEH, BCH}$

(D)

$\text{AEH, BEH, DEH}$

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