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Consider the relation R = {A, B, C, D, E, F, G, H, I, J, K}

and the set of functional dependencies S = { {A, B} -> {C}, {B, D} -> {E, F}, {A, D} -> {G, H}, {B} -> {I}, {G} -> {J} , {F} -> {K} }.

1)        What is the key of R?

2)    Decompose R into 2NF relations:

3)    Further decompose the 2NF relations into 3NF relations:

4)    check whether the 3NF relations you obtained are in BCNF or not.

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