A database is collection of related information stored so that it is available to many users for different purposes. The management of database is done by a software package known as Database Management System.
A database management system (DBMS) is a collection of interrelated data and a set of programs to access that data.
The primary goal of a DBMS is to provide a way to store and retrieve information that is both convenient and efficient.
A database management system is a combination of hardware and software components. A database management system is the major software component of a database system e.g. ORACLE , SYBASE.
Most database management systems have the following facilities:
1) Creation, addition, deletion and modification of data.
2) Creation, addition, deletion and modification of files.
3) Collective or selective retrieval of data.
4) Sorting or indexing of data at the user’s discretion and direction.
5) Various reports can be produces from the system. Data stored in the system can be manipulated.
6) Mathematical functions can be performed.
7) Maintenance of data integrity.
The DBMS interprets and processes the user’s request to retrieve information from a database.
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