Question: 3. Consider the relation R (A, B, C, D, E, F, G) and the set of FD as follows. FD1: E C FD2: G AD

3. Consider the relation R (A, B, C, D, E, F, G) and the set of FD as follows. FD1: E C FD2: G AD FD3: B E FD4: C BF

a) Give one example of non-trivial functional dependency implied by the ones above.

b)Compute the closure of E, i.e., E+.

c)Why are we asked to decompose relations into BCNF? What does BCNF ensure? d)Decompose R into BCNF.

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