SQL is a standard language for manipulating,storing and retrieving data in databases.

These SQL tutorial will teach you how to use
1.SQL for MySQL,
2.SQL Server,
3.MS Access,
4.Oracle,
5.Sybase,
6.Informix,
7.Postgres and
8.Other database systems.

SQL Tutorial - 11: Removing Tables from Database

Referred By:- https://goo.gl/1oF2CE