secondary key

secondary key

[′sek·ən‚der·ē ′kē]
(computer science)
A key that holds the physical location of a record or a portion of a record in a file or database, and provides an alternative means of accessing data. Also known as alternate key.

secondary key

(database)
A candidate key which is not selected as a primary key.
References in periodicals archive ?
Performance of Cardiff schools in 2011 found marked increases in secondary Key Stages 3 and 4 (GCSE).
While this arrangement affords fast primary key searches, it degrades access by secondary key still further because of the increased complexity involved in navigating the B-tree organised table over the heap organised table.
Whenever a play goes away, our linebackers are taught to pick up a secondary key.
Dual-key access interlocks have a secondary key for "two key in" or "key exchange" conditions, making them suitable for full body access (the second key can be used as a personnel key).
Schmid does not deny that tonal relationships shape arias, but rather than considering the drive to the secondary key and the return to the tonic the primary constituents of form, Schmid seems to regard as the primal urge,, of late eighteenth-century vocal music the need to get to, rest on, and make much of, the form-defining verso tronco at the end of most stanzas.
This secondary key is used at the host and all remote units to encrypt/decrypt data transmissions.
To retract the bolt the primary key must be inserted, turned and trapped in the primary lock, and the secondary key turned and removed from the secondary lock.
Should an engineer or other operator also want to gain entry, they are required to remove and retain the secondary key.
Through careful analysis of Beethoven's use of key symbolism and meaning in primary and secondary keys in songs, vocal and choral music, the author creates a table of Beethoven's affective use of tonality in primary keys (Table 2, p.
The primary and three secondary keys can then be used to unlock the interlocks on the access doors.
This action changes the status of the electrical supply to the machine to a safe condition and enables the release of two secondary keys.

Full browser ?