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An important aspect in software configuration management, revision control is the management of modifications done to software applications, sites, documents or any set of information.
Revision control is provided in most software tools and word processors. As revision control is capable of reverting a modification done to its earlier state, it allows users to identify and correct errors and provide security to the data and information.
In a collaborative and distributed development, revision control systems are considered as essential components. In revision control, changes done are noted using an identifier, which is usually a number or alphabet code.
Revision control can be classified into two categories, namely centralized and decentralized ones. In centralized revision control, the repository of files is maintained at one location, probably a server and access are provided whenever needed to the clients for making the relevant changes. In distributed revision control mechanism, each user is provided with their replica of the entire repository.
Benefits provided by revision control are: