Relational Database is a relational database that organizes based on the data relationship model. The use of database databases is very popular in software to manage and maintain databases through the relationship of each data. Of the 5 types of databases, which belong to the Relational Database group the most, such as MySQL, PostgreSQL, MariaDB, MongoDB, Oracle Database, SAP HANA, IMB Db2, MemSQL, Interbase and Firebird.
