Moreover in database approach multiple views can be Brother Cell Phone List created. View is a tailored representation of information contained in one or more tables. View is also called as "Virtual table" because view does not contain physically stored records Brother Cell Phone List and will not occupy any space. A multi-user database whose users have variety of applications must provide facilities for defining multiple views. In traditional file system, if any Brother Cell Phone List changes are made to the structure of the files if will affect all the programs, so changes to the structure of a file may require changing of all programs that access the file.
But in case of database approach the structure of the database is stored Brother Cell Phone List separately in the system catalog from the access of the application programs. This property is known as program-data independence. Database can be used to provide persistent storage for program objects and data structures that resulted in object oriented database Brother Cell Phone List approach. Traditional systems suffered from impedance mismatch problem and Brother Cell Phone List difficulty in accessing the data, which is avoided in object oriented database system.
Database can be used to represent complex relationships among data's as Brother Cell Phone List well as to retrieve and update related data easily and efficiently. It is possible to define and enforce integrity constraints for the data's stored in the database. The database also provides Brother Cell Phone List facilities for recovering hardware and software failures. The backup and recovery subsystem is responsible for recovery. It reduces the application development time Brother Cell Phone List considerably when compared to the file system approach and availability of up-to-date information of all the users. It also provides security to the data's stored in the database system.