Question 9
Consider the instance of a relation V. Which among the following functional dependency set(s) can be inferred from the given information?
{P → R, R → S, P Q → R, S → P }
{R → S, P Q → S, Q → P, P → S}
{P → S, R → S, P Q → R, S → Q}
{R → S, P Q → S, P → S, Q → R}