What is VSS ? When it is Used ?

Some Important points:

• VSS Stands for Visual Source Safe.
• VSS is nothing but configuration management tool.
• VSS is a virtual library of computer files.
• It is a common Repository.
• In VSS store information like FRS,SRS,Test cases documents.
• In VSS document read only but not modifying.
• If we want to modify that first we need to checkout(download) the require file to our local system then modify the file and then checkin (upload) the modified one.