CREATE  TABLE <tablename>
<column name> <data type> [<column constraint>ط·آ£ط¢آ¢ط£آ¢أ¢â‚¬ع‘ط¢آ¬ط·آ¢ط¢آ¦]
PRIMARY KEY <column list>
FOREIGN KEY <column list> REFERENCES <table specifications>

CREATE TABLE STAFF
(
  STAFF_ID int Primary Key,
  STAFF_NAME char(20) Not Null,
  STAFF_SALARY real Null,
  STAFF_PHOTO image Null
);

DROP TABLE <tablename>

DROP TABLE STAFF;

ALTER TABLE <tablename>
ADD [column] <column name><data type>
DROP [column] <column name>

ALTER TABLE STAFF
ADD STAFF_EMAIL char(30);

ALTER TABLE STAFF
DROP COLUMN STAFF_EMAIL;