What is Revision Control ? What is the use of it ? How many types of version control ?

What is Revision Control What is the use of it How many types of version control

About Version Control

Revision control, also known as version control, is a system that manages and tracks changes made to a project or set of files over time. It helps teams of developers to keep track of changes, revert to previous versions, and merge changes made by multiple contributors. Some popular revision control systems include Git, Subversion (SVN), and Mercurial.

The main use of revision control is to:

Track changes: Keeps a record of all changes made to the project, who made them, and when.

Facilitate collaboration: Allows multiple contributors to work on the same project and coordinate changes.

Revert to previous versions: Enables you to revert to a previous version of the project in case of errors or if you need to undo changes.

Merge changes: Helps you merge changes made by different contributors without losing work or introducing conflicts.

Backup: Acts as a backup of the project, as all previous versions of the project are stored.


There are two main types of version control systems:

Centralized Version Control Systems (CVCS): In this type of version control, a central server stores all versions of the files, and developers check out files from the central repository, make changes, and then check them back in. Examples of CVCS include Subversion (SVN) and Perforce.

Distributed Version Control Systems (DVCS): In this type of version control, every developer has a complete copy of the repository, including all versions of the files, on their local machine. Changes are synchronized between repositories. Examples of DVCS include Git, Mercurial, and Bitbucket.

There are also hybrid version control systems, which combine features of both centralized and distributed version control systems.

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