Monday 20 August 2012

Introducing the Database

Database: 

a collection of logically related data.
  • Data-raw facts that have not been processed to reveal their meaning.
  • Logically Related Collection - all the data in the collection is related to each other
  • A database is divided into table and each of these is made up of field. 
  • Tables are set up to contain columns and rows of information. In a database table, the column are called field.
  • A database is a computerized filing system that is used to organize and maintain a collection of information for future use.
  • Example: A library database contains data about books such as author, title, etc.

DBMS

Data Base Management System is the software that manages and controls access to data.
A software package with computer programs that controls the creation, maintenance, and use of a database.
it is a software system that uses a standard method of cataloging, retrieving, and running queries on data.

  • Makes data management more efficient and effective.
  • Helps users have access to more and better managed data.
  • probability of data inconsistency is reduced through a properly designed database that is managed through a DBMS.

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