Browse Definitions :
Definition

version control

Contributor(s): Matthew Haughn

Version control (also known as revision control or source control) is a category of processes and tools designed to keep track of multiple different versions of software, content, documents, websites and other information in development. Any system that provides change tracking and control over programming source code and documentation can be considered version control software. The practice has been a part of creative processes almost as long as writing has existed.

The purpose of version control is ensuring that content changes under development go as planned. While version control is often carried out by a separate application, it can also be embedded into programs such as integrated development environments (IDEs), word processors, spreadsheets and, especially, collaborative web documents and pages. Version control allows servers in multiple locations to run different versions on different sites, even while those versions are being updated simultaneously.

The most powerful and complex version control systems are used in software development. Version control often operates by locking files and using a check-out / check-in system for changed versions. Versions may be identified by labels or tags; approved versions or those that are especially significant may be designated baselines. Checked-out versions may be worked on by different groups or individuals as branching code from the main trunk. When versions are checked out and checked in, the first to check in is sure to succeed. If other versions are checked out, some systems may provide for version merging to allow further changes to be added into the central repository.

Another method used in version control is branching, in which programs in development are copied for development in parallel versions, retaining the original and working on the branch or making different changes to each. Each copy is considered a branch; the original program from which the branch is taken is referred to as the trunk, the baseline, the mainline or the master.

Version control is generally based on a client-server model. Another method is distributed version control, in which all copies are in a codebase repository and changes are synchronized through patches or changes shared from peer to peer.

The terms version control and versioning are sometimes used interchangeably even though their technical meanings are different.

This was last updated in September 2016

Continue Reading About version control

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

Version control works well with a plain text format. For other data files, especially binary, only date/time comparison makes some sense.
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • payload (computing)

    In computing, a payload is the carrying capacity of a packet or other transmission data unit. The term has its roots in the ...

  • passphrase

    A passphrase is a string of characters longer than the usual password (which is typically from four to 16 characters long) that ...

  • Web application firewall (WAF)

    A Web application firewall (WAF) is a firewall that monitors, filters or blocks traffic to and from a Web application. WAFs are ...

SearchHealthIT

SearchDisasterRecovery

SearchStorage

  • computational storage

    Computational storage is defined as an architecture that couples compute with storage in order to reduce data movement. In doing ...

  • data deduplication

    Data deduplication -- often called intelligent compression or single-instance storage -- is a process that eliminates redundant ...

  • public cloud storage

    Public cloud storage, also called storage-as-a-service or online storage is a service model that provides data storage on a ...

Close