Database Management System

A 'database management system' commonly referred as DBMS is computer software designed for the purpose of managing databases based on a variety of data models. A DBMS is a complex set of software programs that controls the organization, storage, management, and retrieval of data in a database.

A DBMS includes:


Modeling Language
Data Structures
Database Query Language
Transaction Mechanism

Modeling Language: A modeling language used to define the logical schema of each database hosted in the DBMS, according to the DBMS data model. It has several models but most commonly used today is ad hoc one embedded in SQL. Data Structures: It is used to tackle with vast amount of data stored on permanent data storage devices. Database Query Language: A database query language and report writer to allow users to interactively interrogate the database, analyze its data and update it according to the users privileges on data. It also controls the security of the database. Transaction Mechanism: It Ideally would guarantee the ACID properties to ensure data integrity despite concurrent user accesses and faults. It also maintains the integrity of the data in the database.

Some of DBMS Benefits:


Improved strategic use of corporate data
Reduced complexity of the organization's information systems environment
Reduced data redundancy and inconsistency
Enhanced data integrity
Application-data independence
Improved security
Reduced application development and maintenance costs
Improved flexibility of information systems
Increased access and availability of data and information


Examples of DBMSs include:


Oracle
DB2
Sybase Adaptive Server Enterprise
Informix
Microsoft Access
Microsoft SQL Server
Firebird
MySQL

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Author's Name: Prasad Adsul

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