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please answer both parts! kind regards Let R(A,B,C,D) and S(C,D.E) be two relations. The key for R is AC and the key for S is
please answer both parts! kind regards Let R(A,B,C,D) and S(C,D.E) be two relations. The key for R is AC and the key for S is CD. a) Is ACD a candidate key for the natural join of R and S ? b) If this is true, provide a proof. If not, identify a candidate key for the natural join of R and S
please answer both parts! kind regards
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