Database Management System ebook free download

A database-management system (DBMS) is a collection of interrelated data and a

set of programs to access those data. The collection of data, usually referred to as the

database, contains information relevant to an enterprise. 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. These
concepts and technique form the focus of this book. This chapter briefly introduces
the principles of database systems 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. These

concepts and technique form the focus of this book. This chapter briefly introduces

the principles of database systems.