lock
(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.
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enterprise application
An enterprise application is the term used to describe applications -- or software -- that a business would use to assist the organization in...
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open source
Generically, open source refers to a program in which the source code is available to the general public for use and/or modification from its...
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CPU - Central Processing Unit
Definition: CPU is the abbreviation for central processing unit. The CPU is the brains of the computer where most calculations take place.
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mobile operating system
An operating system for mobile devices.
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Facebook
The name of a social networking site (SNS) that connects people with friends and others who work, study and live around them.
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ERP - Enterprise Resource Planning
Short for enterprise resource planning, ERP is business management software that allows an organization to use a system of integrated applications...
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RSA Secure ID
RSA SecurID ( “SecurID”) is a two-factor authentication technology that is used to protect network resources.
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ecommerce remarketing
In email and online marketing, remarketing or ecommerce remarketing refers to the techniques, strategies and often the automated email...
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Wi-Fi
A popular wireless networking technology that provides high-speed Internet and network connections.
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RAM
Pronounced ramm, acronym for random access memory, a type of computer memory that can be accessed randomly; that is, any byte of memory can be...
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biometrics
The study of measurable biological characteristics. In computer security, biometrics refers to authentication techniques that rely on physical...
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