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Consider a relation with schema S(A, B, C, D) with FDs A -> B, B ->C, and B -> D a) What are all the

Consider a relation with schema S(A, B, C, D) with FDs A -> B, B ->C, and B -> D

a) What are all the nontrivial FDs that follow from the given FDs? You should restrict yourself to FDs with single attributes on the right side. b) What are all the keys of R? c) What are all the superkeys for R that are not keys?

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