A database management system is a software to store, process, and upload data into a computer system. The database management system is usually used for managing larger datasets and the relational data. The relational database contains multiple data tables with a defined relation between tables, using some key variables known as the primary key and secondary key. In the database management software, they should have a primary key to uniquely identify a single row from a data table. There are a lots of database management software available, ranging from open source (free) to Enterprise Edition (commercial) versions.
The most commonly used database management software are Microsoft SQL Server, MySQL, PostgreSQL, Oracle, and so on. The open source community mostly uses PostgreSQL and MySQL because these two are easy to use and freely available. In this chapter, you...
