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Introduction of Database  A database is  a collection of program and tools that facilitate users to create and maintain the database. It provides the enterprise  with centralized control of its operational data- which is one of its most relevant assets. We will be using MYSQL it ...

PostgreSQL is the open source relational database system. PostgreSQL has some advanced features of database like  User-defined types Table inheritance Sophisticated locking mechanism Foreign key referential integrity Views, rules, subquery Nested transactions (savepoints) Multi-version ...