Basic Commands in SQL :
SELECT -used to extracts data from a database
UPDATE – used to updates data in a database
DELETE – used to deletes data from a database
INSERT INTO – used to inserts new data into a database
CREATE DATABASE -used to creates a new database
ALTER DATABASE -used to modifies a database
CREATE TABLE – used to creates a new table
ALTER TABLE – used to modifies a table
DROP TABLE – used to deletes a table
CREATE INDEX – used to creates an index (search key)
DROP INDEX – deletes an index