Database: Introduction

Hello guys,
We all use computers today.With this growing use of the computers,it is fair to say that databases play a critical role in almost all areas where computers are used,including business,electronic commerce,engineering,medicine,law,education and library science.So,starting with what is a database?

• A database is a collection of related data.By data,we mean known facts that can be recorded and that have implicit meaning.

For example, consider the names, telephone numbers, and addresses of people.
These data are mostly stored in a indexed address book or using software such as Microsoft access or excel.This collection or related data with an implicit meaning is a database.

• A database can be of any size and complexity.An example of a large commercial database is Amazon.com.

• A database may be generated and maintained manually or it may be computerized.A computerized database may be created and maintained either by a group of application programs written specifically for that task or by a database management system.