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key field

   Also found in: Wikipedia, Hutchinson 0.01 sec.

A field in a record that holds unique data which identifies that record from all the other records in the file or database. Account number, product code and customer name are typical key fields. As an identifier, each key value must be unique in each record. See sort key.

(database)key field - A field of a database (typically a relational database) table which together form a unique identifier for a record (a table entry). The aggregate of these fields is usually referred to simply as "the key".
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Jawbreaker; the attack on Bin Laden and Al-Qaeda: a personal account by the CIA's key field commander.
Berntsen, Gary. Jawbreaker: The Attack on Bin Laden and Al-Qaeda, a ... by Purucker, Mary / Kliatt
Jawbreaker: The Attack on bin Laden and al Qaeda, A Personal Account by the CIA's Key Field Commander By Gary Berntsen and Ralph Pezzullo Crown, $25.
Slouching toward Tora Bora: what would it really have taken to catch ... by Naylor, Sean / Washington Monthly
Positioning the security business as a key field for the Hitachi Group, Hitachi is working to expand operations by concentrating management resources in fields such as cyber security, particularly encryption; security for social infrastructure systems, including explosive trace detection system; and personal authentication, with a particular focus on finger vein authentication.
Hitachi to Expand Finger Vein Authentication System Business on a ... by JCN Newswires
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