Primary key

Noun

Word Frequency: 1.2

Definitions

1.NounIn the design of a database table, the primary key (abbreviated PK) is selected among the non-empty set of candidate keys. The PK is a column (or an irreducible group of columns) able to identify every row of the table.

Synonyms

candidate key sortkey surrogate key function key split key index passkey programmed function key principal unique identifier surrogate keypuncher

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