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Which one of the following is a set of one or more attributes taken collectively to uniquely identify a record?(a) Candidate key(b) Sub key(c) Super key(d) Foreign keyThe question was posed to me in class test.This interesting question is from Keys topic in chapter The Relational Model of Database Management

Answer»

Right CHOICE is (c) Super key

Best EXPLANATION: Super key is the superset of all the KEYS in a relation.



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