Data Manipulation Language (DML) commands:

Data Manipulation Language (DML) commands:
  DML is abbreviation of Data Manipulation Language. It is used to retrieve, store, modify, delete, insert and update data in database.

SELECT     - retrieve data from the a database.
INSERT     - insert data into a table
UPDATE    - updates existing data within a table
DELETE     - deletes all records from a table, the space for the records remain