Discussion Forum
Que. | Consider the relation scheme R = {E, F, G, H, I, J, K, L, M, M} 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:{E, F, H} |