Question

Consider the relation R with the following functional dependencies:
R(P.Q.R.D.E.F)
FD = {P Q.ORD.
ERDP
Which of the following are the candidate keys?
(a) PF. QF
(b) PF. QF. RF
(c) PEF. QEF. DEF
(d) PEF. QFR​

Answer 1

Answer:

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