DROP TABLE EMP;

CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL ,
ENAME CHAR(10),
JOB CHAR(9),
MGR NUMBER(4),
HIREDATE DATE,
SAL NUMBER(7,2),
COMM NUMBER(7,2),
DEPTNO NUMBER(2)) ;



INSERT INTO EMP VALUES
        (7369,'SMITH','CLERK',7902,'17-DEC-2000',800,NULL,20);
INSERT INTO EMP VALUES
        (7499,'ALLEN','SALESMAN',7698,'20-FEB-1999',1600,300,30);
INSERT INTO EMP VALUES
        (7521,'WARD','SALESMAN',7698,'22-FEB-1991',1250,500,30);
INSERT INTO EMP VALUES
        (7566,'JONES','MANAGER',7839,'2-APR-2000',2975,NULL,20);
INSERT INTO EMP VALUES
        (7654,'MARTIN','SALESMAN',7698,'28-SEP-1998',1250,1400,30);
INSERT INTO EMP VALUES
        (7698,'BLAKE','MANAGER',7839,'1-MAY-1997',2850,NULL,30);
INSERT INTO EMP VALUES
        (7782,'CLARK','MANAGER',7839,'9-JUN-1996',2450,NULL,10);
INSERT INTO EMP VALUES
        (7788,'SCOTT','ANALYST',7566,'09-DEC-1995',3000,NULL,20);
INSERT INTO EMP VALUES
        (7839,'KING','PRESIDENT',NULL,'17-NOV-1994',5000,NULL,10);
INSERT INTO EMP VALUES
        (7844,'TURNER','SALESMAN',7698,'8-SEP-1998',1500,0,30);
INSERT INTO EMP VALUES
        (7876,'ADAMS','CLERK',7788,'12-JAN-1993',1100,NULL,20);
INSERT INTO EMP VALUES
        (7900,'JAMES','CLERK',7698,'3-DEC-2000',950,NULL,30);
INSERT INTO EMP VALUES
        (7902,'FORD','ANALYST',7566,'3-DEC-1992',3000,NULL,20);
INSERT INTO EMP VALUES
        (7934,'MILLER','CLERK',7782,'23-JAN-1999',1300,NULL,10);

		DROP TABLE DEPT;

CREATE TABLE DEPT
       (DEPTNO NUMBER(2),
        DNAME CHAR(14) ,
        LOC CHAR(13) ) ;

INSERT INTO DEPT VALUES
        (10,'ACCOUNTING','NEW YORK');
INSERT INTO DEPT VALUES
         (20,'RESEARCH','DALLAS');
INSERT INTO DEPT VALUES
        (30,'SALES','CHICAGO');
INSERT INTO DEPT VALUES
        (40,'OPERATIONS','BOSTON');

		DROP TABLE SALGRADE;

CREATE TABLE SALGRADE
      ( GRADE NUMBER,
        LOSAL NUMBER,
        HISAL NUMBER );

INSERT INTO SALGRADE VALUES (1,700,1200);
INSERT INTO SALGRADE VALUES (2,1201,1400);
INSERT INTO SALGRADE VALUES (3,1401,2000);
INSERT INTO SALGRADE VALUES (4,2001,3000);
INSERT INTO SALGRADE VALUES (5,3001,9999);


