Database Management System
Data:
Data is a known fact that can be recorded and tat have implicit meaning. Data are raw or isolated facts from which we can produce information
Information:
Information is processed , organized or summarized data. It is collection of related data.
Database :
A database is defined as a collection of logically related data stored together.It is basically an electronic filing cabinet, which contain computerized data files. A database is organized in such a way that a computer program can quickly select desired pieces of data.
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| Fig: Database |
Database is a collection of interrelated data stored together without harmful or unnecessary redundancy.
A database consists of :
1)Data item
2)Relationships
3) Constraints
Database Management system(DBMS):
A database management system(DBMS) is a generalized software system for manipulating database. By using DBMS user can add, delete, update or retrieve particular information on demand.
It is general purpose software system that facilitates the process of defining and constructing and manipulating information.
Database software examples are:
1)ORACLE 2) MY SQL 3)SQL SERVER 4) MS ACCESS 5)SQL Lite 6) IBM DB2 7)TeraData 8)PostgreSQL 9)MangoDB 10)Informix etc.
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