what is primary keyprimary key - primary key is
What is Primary key?
Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
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what is primary keyprimary key - primary key is one of the candidate keys which uniquely identifies each row in the
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what is candidate keycandidate key - a candidate key of an entity set is a minimal superkey which uniquely identifies each row in the
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what is foreign keyforeign key - let there are two relations in tables r and s any candidate key of the relation r that is referred in the relation s
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