Purpose of Database System in DBMS

Purpose of Database System

The primary goal of a DBMS is to provide a way to store and retrieve database information that is both convenient and efficient. Database systems are designed to manage large bodies of information. Management of data involves both defining structures for storage of information and providing mechanisms for the manipulation of information. In addition, the database system must ensure the safety of the information stored, despite system crashes or attempts at unauthorized access. If data are to be shared among several users, the system must avoid possible anomalous results. Because information is so important in most organizations, computer scientists have developed a large body of concepts and techniques for managing data. Databases are widely used. Here are some representative applications:

Banking : For customer information, accounts, and loans, and banking transactions.

Airlines : For reservations and schedule information. Airlines were among the first to use databases in a geographically distributed manner terminals situated around the world accessed the central database system through phone lines and other data networks.

Universities : For student information, course registrations, and grades.

Credit Card Transaction : For purchases on Credit Cards and generation of monthly statements.

Tele-communication : For keeping records of calls made, generating monthly bills, maintaining balances on prepaid calling cards, and storing information about the communication networks.

Finance : For storing information about holdings, sales, and purchases of financial instruments such as stocks and bonds.

Sales : For customer, product, and purchase information.

Manufacturing : For management of supply chain and for tracking production of items in factories, inventories of items in warehouses/stores, and orders for items.

Human Resources : For information about employees, salaries, payroll taxes and benefits, and for generation of paychecks.

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