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Synopsis The primary foal of DBMS is to provide an environment that is convenient and efficient for people to use in retrieving and storing database information. The collection of data usually refers to database which contains information about one particular enterprise. The large bodies of information are designed to manage by database systems, provision of mechanism for the manipulation of information, storage of information involved in management of data. The importance of information in most organisations determines the value of the database, has led the development of a large body of concepts and techniques for the efficient management of data. Structures of a database in the data model. Database system provides two different types of Languages. The reason for using DBMS is to have central control of both the data and the programs that access those data. The major purpose of database system is to provide users with an abstract view of the data. Amidst the plenty of books on the subject, the present work is unique having its own features and characteristics. The entire information is grouped under nine broad sections namely- Database management System, the Relational model, Database Design theory and methodology, Database architecture, Distributed databases, Object-oriented and extended relational database technology, Query procedure, transaction management; and Further topics-consisting of total thirty chapters. Hopefully, this would serve as ready refer tool for students, teachers and all practicing professionals in the field.