CREATE TABLE EMPEX ( EMPNONUMBER(4)NOT NULL, ENAMEVARCHAR2(10), JOBVARCHAR2(9), MGRNUMBER(4), HIREDATEDATE, SALNUMBER(7,2), COMMNUMBER(7,2), DEPTNONUMBER(2), PRIMARY KEY(EMPNO) ) ; COMMENT ON TABLE EMPEX IS '사원테이블' COMMENT ON COLUMN EMPEX.EMPNO IS '사원번호' COMMENT ON COLUMN EMPEX.ENAME IS '사원이름' COMMENT ON COLUMN EMPEX.JOB IS '업무' COMMENT ON COLUMN EMPEX.MGR IS '직속상관' COMMENT ON COLUMN EMPEX.HIRED..