Keywords

#superkey

Superkey

Set of attributes that uniquely identifies each tuple of a relation

In the relational data model a superkey is any set of attributes that uniquely identifies each tuple of a relation. Because superkey values are unique, tuples with the same superkey value must also have the same non-key attribute values. That is, non-key attributes are functionally dependent on the superkey.

Sat 23rd

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Superkey Candidate key Relational model Database normalization Fourth normal form Third normal form Boyce–Codd normal form Primary key Fifth normal form Foreign key
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