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Functional dependencies logically

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Reference no: EM131171067

The first 2 questions use the schema R = (A,B,C,D,E) and the set F of functional dependencies:

A -> B

C -> D

BD -> E

1. Which of the following is in F+ (the set of functional dependencies logically implied by F)?

(a) A ->E

(b) B -> A

(c) E -> A

(d) AC -> E

(e) AD -> E

2. Which of the following are candidate keys?

(a) AB

(b) CD

(c) BD

(d) AC

(e) E

(f) AE

Reference no: EM131171067

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