1.

Choose the correct statement regarding superkeys(a) A superkey is an attribute or a group of multiple attributes that can uniquely identify a tuple(b) A superkey is a tuple or a set of multiple tuples that can uniquely identify an attribute(c) Every superkey is a candidate key(d) A superkey is an attribute or a set of attributes that distinguish the relation from other relations

Answer» Correct option is (a) A superkey is an attribute or a group of multiple attributes that can uniquely identify a tuple

The explanation: A superkey is an attribute or a set of multiple attributes that can uniquely identify a tuple. It is used to differentiate between tuples.


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