Database Management System

A Database Management System (DBMS) is a collection of programs that enables you to store, modify, and extract information from a database. A DBMS generally manipulates the data itself, the data format, field names, record structure and file structure. It also defines rules to validate and manipulate this data. The DBMS provides users and programmers with a systematic way to create, retrieve, update and manage data. There are many different types of database management systems, ranging from small systems that run on personal to huge systems that run on mainframes.

The Database System can be divided into four components.

  • Database: Collection of logical data.
  • Database application : Database application may be Personal, Departmental, Enterprise and Internal
  • DBMS: Software that allow users to define, create and manages database access, Ex: MySql, Oracle etc.
  • Users: Users may be of various type such as DB administrator, System developer and End users.

There are several Functions of DBMS. Few are listed below:

  • Concurrency Control
  • Provides data Independence
  • Provides Recovery services
  • Provides Utility services
  • Provides a clear and logical view of the process that manipulates data

Fourth-generation query languages, such as SQL, are used along with the DBMS package to interact with a database.

Database Management Systems

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