distributed database management system pdf

In fact, the development of computer networks promotes a decentralized mode of work. Although integration and controlled access may imply centralization, this is not the intention. IntroductionĪ major motivation behind the development of database systems is the desire to integrate the operational data of an organization and to provide controlled access to the data. There have been claims that centralized DBMSs will eventually be an ‘antique curiosity’ as organizations move towards distributed DBMSs. In this chapter we discuss the concepts and issues of the Distributed Database Management System (DDBMS), which allows users to access not only the data at their own site but also data stored at remote sites. In previous chapters we have concentrated on centralized database systems, that is systems with a single logical database located at one site under the control of a single DBMS. This combined technology is one of the major developments in the database systems area. Now with the combination of these two technologies, distributed database technology may change the mode of working from centralized to decentralized.

During recent times, we have seen the rapid developments in network and data communication technology, epitomized by the Internet, mobile and wireless computing, intelligent devices, and grid computing. Introduction to Distributed Database Management Systems (Distributed DBMSs)ĭatabase technology has taken us from a paradigm of data processing in which each application defined and maintained its own data, to one in which data is defined and administered centrally. Title: Database Systems, A Practical Approach to Design, Implementation, and Management, Fourth Edition, Chapter 22, Addition-Wesley, 2012.

Distributed database management system pdf