Lec 56: GATE 2024 Preparation | GATE 2015 PYQ By Jayesh Umre
Consider the relation X(P, Q, R, S, T, U) with the following set of functional dependencies
F = {
{P, R} → {S, T},
{P, S, U} → {Q, R}
}
Which of the following is the trivial functional dependency in F+, where F+ is closure of F?
1. {P, R} → {S, T}
2. {P, R} → {R, T}
3. {P, S} → {S}
4. {P, S, U} → {Q}
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