Data Definition Language-DDL
These are used to define database structure or schema Examles as below 1.CREATE- create objects in the database 2.ALTER- alters the structure of the database 3.DROP-delete the objects from the database 4.TRUNCATE-remove all the records from the database including spaces allocated for the records are removed. 5.COMMENT-add comments to the data dictionary 6.RENAME-rename an object.