Foreword
Database Management System is one of the most important subjects of the computer and IT field. It is used in almost all the applications like management information systems, expert systems, business information systems, mobile applications, and many more. Over the years, the world has witnessed many inventions in database technologies. The most important invention is relational database management system. Application developers, in the IT industry, are using relational model-based databases for more than thirty years.
Students of IT, computer science and applications, are required to learn databases in one or more courses. Databases are used to store and retrieve data. There are certain rules used to manage data within a database. Database ...
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