Recently, I had the opportunity to learn about RDBMS (Relational Database Management System). I am typing SQL statements while being impressed by the fact that such mechanisms exist behind the apps ...

1. What is an RDBMS? An RDBMS (Relational Database Management System) is a database management system that manages data based on the **relational model**.

Order of attributes in SELECT does not matter In Aggregate, no space between function and brackets Where clause column need not be in select columns ...