Database technology can cut through many of the problems a traditional file organization creates. A database is a collection of data organized to serve many applications efficiently by centralizing the data and minimizing redundant data. Database management system is simply the software that permits an organization to centralize data, manage them efficiently and provide access to the stored data by application programs. The logical view presents data as they would be perceived by end users or business specialists, whereas the physical view shows data are actually organized and structured on physical storage media.