file locking

(redirected from File lock)

file locking

[′fil ‚läk·iŋ]
(computer science)
A technique that prevents processing of a file by more than one program or user at a time, ensuring that a file in use by one user is made unavailable to others.
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.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Clips can also be manually saved by pressing the File Lock button.
The Titanium Maximum Security version adds easy-to-use options including secure erase, remote file lock in case of computer theft, a system tuner, and 10GB of secure online backup and sync with sharing features.
Titanium Internet Security is priced at USD49.95 for 1 PC and USD69.95 for 3 PCs and includes everything in Titanium Antivirus+, as well as spam blocking, customisable parental controls and data theft prevention.</p><p>Titanium Maximum Security is priced at USD59.95 for 1 PC and USD79.95 for 3 PCs and includes everything in Titanium Internet Security, as well as 10GB secure online backup with sync and sharing features, system optimisation, Secure Erase, Wi-Fi protection and Remote File Lock.</p><p>Titanium 2011 products support Microsoft Windows 7 Family, Service Pack 1 or higher; Windows Vista, Service Pack 1 or higher; and Windows XP Family (32 bit or higher), Service Pack 3 or higher.</p>
File Lock allows you to make files read-only, or to make them totally unavailable.
Although NFSv4 introduced major improvements in locking, NFSv4 clients cannot detect that a file lock has been released abnormally, possibly causing the underlying file data to be corrupted.
Check your benchmark options for allowing or disallowing file locks.
Included are front gang locks, side gang locks, central locks for desks and credenzas, lateral file locks and more.
To allow clients to share access to a file, NT and Unix operating systems use different implementations for three types of file locking features: (1) file locks to protect an entire file; (2) record locks to protect portions of a file defined by an offset into the file and a range of bytes from that offset; and (3) cache locks to protect the coherency (stability) of a file shared over the network.