Sql statement are categoriesed into three types

DDL-Data definition language is use define the structure of database which holds the content or data.

Mainly it is used to define the structure that holds the data Example of DDL is Create,Alter,Drop and truncate.

DML-Data manipulation language is used to retrieve,store,modify,delete,insert and update data in database. Its operation is select,Update,Insert

DCL-Data Control Language is used to create roles, permission.It is used to control access to database by securing it.