Consider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies {{E, F} {G}, {F} {I, J}, {E, H} {K, L}, {K} {M}, {L} {N}} on R. What is the key for R?

Consider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and th

1.	Consider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies {{E, F} {G}, {F} {I, J}, {E, H} {K, L}, {K} {M}, {L} {N}} on R. What is the key for R?
A.	{E, F}
B.	{E, F, H}
C.	{E, F, H, K, L}
D.	{E}
Answer» C. {E, F, H, K, L}

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Consider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies {{E, F} {G}, {F} {I, J}, {E, H} {K, L}, {K} {M}, {L} {N}} on R. What is the key for R?

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Consider the relation scheme R = (E, F, G, H, I, J, K, L, M, N) and the set of functional dependencies {{E, F} {G}, {F} {I, J}, {E, H} {K, L}, {K} {M}, {L} {N}} on R.
What is the key for R?