Database Servers
Steve Steinke · 2003
The database server software also protects data. Since network data can be accessed by many people, it must be protected from several potential problems. First, when two or more people work on the same database record at a time, they could overwrite each other&s;s changes and cause data to be corrupted. Database server software must establish rules to regulate access to multiple simultaneous users. These rules are called concurrency control. Second, not every company employee needs access to every piece of data in the shared database. Therefore, a database server must also provide rules to regulate access, including passwords, access rights, and data encryption. These rules are called access control.