M

Mr. Dubey • 52.30K Points
Coach 

Q. Key is referred to

(A) Non-trivial extraction of implicit previously unknown and potentially useful information from dat(A)
(B) Set of columns in a database table that can be used to identify each record within this table uniquely
(C) collection of interesting and useful patterns in a database
(D) none of these
Correct : Option (B)

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