Key field

From Wikipedia, the free encyclopedia

A key field is a field or set of fields of a database (typically a relational database) table which together form a unique identifier for a database record (a table entry). The aggregate of these fields is usually referred to simply as "the key". A Key fields also define searches.

Also see primary key and foreign key.

This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

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