What is candidate key in DBMS?

candidate_key
What is Candidate Key in DBMS? A Candidate Key in DBMS is a minimal set of columns/attributes that can be used to uniquely identify a single/every tuple or row in a relation. Candidate Keys are determined during database design based on the underlying business rules of the database. After finding all possible candidate keys in a relation.DBA choose one key as a primary key. Consider the following relation in the context of a business firm: candidate key  E...
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