You are in the: Small Business Computing Channelarrow View Sites +
Small Business Technology
» ECommerce-Guide | Small Business Computing | Webopedia | WinPlanet |  »Close
Enter a word for a definition... ...or choose a computer category.

   Term of the Day
   New Terms
   New Links
   Quick Reference
   Did You Know?
   Tech Support
   Webopedia Jobs
   About Us
   Link to Us

talk to us
   Submit a URL
   Suggest a Term
   Report an Error
Internet Lists
Internet News
Internet Resources
Linux/Open Source
Personal Technology
Small Business
Windows Technology
xSP Resources
Corporate Info
Tech Jobs
E-mail Offers
  Be a Commerce Partner

Last modified: Friday, November 16, 2001 

(1) To make a file or other piece of data inaccessible. File locking is a critical component of all multi-user computer systems, including local-area networks. When users share files, the operating system must ensure that two or more users do not attempt to modify the same file simultaneously. It does this by locking the file as soon as the first user opens it. All subsequent users may read the file, but they cannot write to it until the first user is finished.

In addition to file locking, many database management systems support record locking, in which a single record, rather than an entire file, is locked. This enables different users to access different records within the same file without interfering with one another.

(2) In Macintosh environments, locking a diskette means write-protecting it.

E-mail this definition to a colleague

Sponsored listings

Global Equipment Company: Safes - Offers industrial supplies including safes. Products feature temper resistant steel, mounting hardware, and electronic locks.

Maglocks: Hotel Card Locks - Offers premium electronic locks and access control systems with keyless entry for hotels, hospitals and dorm rooms.

McGrawHill Construction: Online at - Research Locks and Manufacturers in a library of more than 1,800 Building Product Catalogs. Visit us today!

For pages about lock . Also check out the following links!

Related Links

Sponsored listings

Construction Online - Research Lock Manufacturers in a library of more than 1,500 Building Product Catalogs. Visit McGraw Hill today!

American Casting & Manufacturing: Locks - Designer and manufacturer of a wide range of tamper evident and high-security seals and locks for all industries and for all applications.

Symantec: Virus Security and Removal - Stop Zotob Virus now. Visit Symantec for updated information and resources.

Best Buy For Business. Find Computer Security Hardware. - Visit us online to find Computer Security Hardware and more than 100,000 other business-class technology products not available in stores. Shop now. Locking Bolts - Provides database of suppliers for Locking Bolts. Browse catalogs and view technical information.

related categories

File Management

related terms

database management system


local-area network


operating system



Give Us Your

lock Products
Compare Products,Prices and Stores

Shop by Category:
Tools and Hardware
27348 Store Offers

Laptop Accessories
90 Model Matches

Sport and Outdoor
13624 Store Offers

18622 Store Offers

51 Store Offers

JupiterWeb networks:

Search JupiterWeb:

Jupitermedia Corporation has two divisions:
Jupiterimages andJupiterWeb

Legal Notices, Licensing, Reprints, & Permissions, Privacy Policy.

Jupitermedia Corporate Info | Newsletters | Tech Jobs | Shopping | E-mail Offers