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GATE CS and IT 2014 Paper

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Question : 31

Total: 65

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 ?

{E,F}
{E,F,H}
{E,F,H,K,L}
{E}

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