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This book is about the different types of database management systems and security issues of databases and networks. We will take the Oracle database to elaborate with a detailed discussion on the base of RDBMS and other databases like NoSql, Mobile database, and open-source database. Oracle has transformed the landscape of data management to a very high standard. By itself, Oracle uses database tables to store any structured and unstructured data. However, it also stored a set of codes with business logic in the form of a trigger, procedure, function, etc. While this is a unique advantage,...

A database management system (DBMS) is the technology for creating and managing databases. DBMS is a software tool to organize (create, retrieve, update, and manage) data in a database. A datum is a unit of data. Meaningful data combined to form information. Hence, information is interpreted data - data provided with semantics. The main aim of a DBMS is to supply a way to store up and retrieve database information that is both convenient and efficient. By data, we mean known facts that can be recorded and that have embedded meaning.