 Название: Database Management Systems
Автор: G.K. Gupta
Издательство: McGraw Hill Education
Год: 2018
Страниц: 432
Язык: английский
Формат: pdf (true)
Размер: 10.1 MB
This book is tailor made for the course on Database Management Systems for CSE and IT streams. It provides simple but comprehensive explanation of fundamentals of database management systems. It focuses on building database applications by emphasizing on concepts that are the foundation of database processing.
Database technology occupies a very important position in our increasingly computerized society. Almost all computer systems whether they are supermarket checkout systems, air traffic control systems, railways seat reservation systems, planning systems in governments or automatic teller machines (ATMs) with which most of us interact in our daily lives, have a database system at their core. Therefore, all computer science, information technology, business administration and information science students need to learn about the basic theory and practice of database systems since it is fundamental to much of computer technology.
The users should be able to carry out operations like insertion, deletion and retrieval (and others, for example, sorting). To provide such facilities, any large database needs to be managed by a substantial package of software. This software is commonly called a Database Management System (DBMS). The primary purpose of a DBMS is to allow a user to store, update and retrieve data in abstract terms and thus make it easy to maintain and retrieve information from a database. A DBMS relieves the user from having to know about exact physical representations of data and having to specify detailed algorithms for storing, updating and retrieving data. Without a DBMS, a database would be of little use. With a DBMS, a database becomes a powerful tool to support the operations of an enterprise and to understand and analyse the enterprise.
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