record locking


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record locking

[′rek·ərd ‚läk·iŋ]
(computer science)
Action of a computer system that makes a record that is being processed by one user unavailable to other users, to prevent more than one user from attempting to update the same information simultaneously.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

file and record locking

A first-come, first-served technique for managing data in a multiuser environment. The first user to access the file or data record prevents, or locks out, other users from accessing it. After the file or record is updated, it is unlocked and available. File and record locking is an essential part of every database management system (DBMS), document management system and any other system that allows data to be updated by multiple users or applications. See also lock down.
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For example, Unix clients running NFSv2 and NFSv3 support only advisory record locking, while Windows clients running SMB/CIFS support mandatory file and record locks, as well as advisory cache locks.
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