Sophisticated revision control that tracks and accounts for ownership of changes to documents and code may be extremely helpful or even indispensable in such situations. Moreover, in software development, legal and business practice, and other environments, it has become increasingly common for a single document or snippet of code to be edited by a team, the members of which may be geographically dispersed and may pursue different and even contrary interests. This ensures that the majority of management of version control steps is hidden behind the scenes. Consequently, systems to automate some or all of the revision control process have been developed. Since the code base is the same, it also requires granting read-write-execute permission to a set of developers, and this adds the pressure of someone managing permissions so that the code base is not compromised, which adds more complexity. This requires a lot of self-discipline on the part of developers and often leads to mistakes. While this method can work, it is inefficient as many near-identical copies of the program have to be maintained. This simple approach has been used in many large software projects. It may also be necessary to develop two versions of the software concurrently: for instance, where one version has bugs fixed, but no new features ( branch), while the other version is where new features are worked on ( trunk).Īt the simplest level, developers could simply retain multiple copies of the different versions of the program, and label them appropriately. Therefore, for the purposes of locating and fixing bugs, it is vitally important to be able to retrieve and run different versions of the software to determine in which version(s) the problem occurs. Bugs or features of the software are often only present in certain versions (because of the fixing of some problems and the introduction of others as the program develops). Software developers sometimes use revision control software to maintain documentation and configuration files as well as source code.Īs teams design, develop and deploy software, it is common for multiple versions of the same software to be deployed in different sites and for the software's developers to be working simultaneously on updates. In computer software engineering, revision control is any kind of practice that tracks and provides control over changes to source code. Revision control enables reverting a document to a previous revision, which is critical for allowing editors to track each other's edits, correct mistakes, and defend against vandalism and spamming in wikis. Version control systems are most commonly run as stand-alone applications, but revision control is also embedded in various types of software, such as word processors and spreadsheets, collaborative web docs, and content management systems, e.g., Wikipedia's page history. Today, the most capable (as well as complex) revision control systems are those used in software development, where a team of people may concurrently make changes to the same files. The numbering of book editions and of specification revisions are examples that date back to the print-only era. The need for a logical way to organize and control revisions has existed for almost as long as writing has existed, but revision control became much more important, and complicated, when the era of computing began. Revisions can be compared, restored, and, with some types of files, merged. Each revision is associated with a timestamp and the person making the change. When the first change is made, the resulting set is "revision 2", and so on. For example, an initial set of files is "revision 1". Ĭhanges are usually identified by a number or letter code, termed the "revision number", "revision level", or simply "revision". Version control is a component of software configuration management. In software engineering, version control (also known as revision control, source control, or source code management) is a class of systems responsible for managing changes to computer programs, documents, large web sites, or other collections of information. JSTOR ( April 2011) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |