Example-GRANT CREATE SESSION TO MCA12;

(This command gives system level permission on creating a session - not portable)

GRANT SELECT ON EMP TO MCA12;

(Object level permission on table EMP)

GRANT SELECT, UPDATE, INSERT, DELETE ON EMP TO MCA12;

GRANT SELECT, UPDATE ON EMP TO MCA12, MCA13;

(Two users)

GRANT ALL ON EMP TO PUBLIC;

(All permission to every users, do not use it. It is very risky for database)

Revoke: It is used to revoke the permission granted.