20-09-2014, 01:31 PM
Abstracts: The use of VERSION CONTROL SYSTEM is to keep the master file in the repository located on a server, a computer that is never used by the people but only by the applications that serves them. No one edits the master copy directly instead Professor and student each have their working copy on their own computer. This leads them work independently making whatever changes they want. As soon as the Professor is ready to share his changes he admits them to the repository. Students can then update his copy to get the changes done by the Professor and of course when student wants to edit something then he can edit and Professor can update it .But what if student and Professor makes change to the same part of the page of working copies ? Old trash in version control system prevents this from happening by locking the master copy, only one person can open the copy at a time. This guarantee that two or more people can never accidently edit the same part at the same time. But once again that meant people had to take turns. Most of today’s version system uses different Strategy. In these systems nothing is ever locked. Everyone is always allowed to edit their working copies. Sometimes of course people will make changes at the same time to the same part of the paper, If Professor commits some changes first to the repository then his changes will be updated first. If the student make changes to that the version control system stops him by alerting about the changes made by Professor.