DROP TABLE EMP;
DROP TABLE BONUS;
DROP TABLE DEPT;
DROP TABLE SALGRADE;
DROP TABLE ANGAJATI;
DROP TABLE DEPARTAMENTE;
DROP TABLE GRILA_SALARIU;

CREATE TABLE BONUS
        (ENAME VARCHAR2(10),
         JOB   VARCHAR2(9),
         SAL   NUMBER,
         COMM  NUMBER);

CREATE TABLE EMP
       (EMPNO NUMBER(4) NOT NULL,
        ENAME VARCHAR2(10),
        JOB VARCHAR2(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,
        TO_DATE('17-12-1980', 'DD-MM-YYYY'),  800, NULL, 20);
INSERT INTO EMP VALUES
        (7499, 'ALLEN',  'SALESMAN',  7698,
        TO_DATE('20-02-1981', 'DD-MM-YYYY'), 1600,  300, 30);
INSERT INTO EMP VALUES
        (7521, 'WARD',   'SALESMAN',  7698,
        TO_DATE('22-02-1981', 'DD-MM-YYYY'), 1250,  500, 30);
INSERT INTO EMP VALUES
        (7566, 'JONES',  'MANAGER',   7839,
        TO_DATE('2-04-1981', 'DD-MM-YYYY'),  2975, NULL, 20);
INSERT INTO EMP VALUES
        (7654, 'MARTIN', 'SALESMAN',  7698,
        TO_DATE('28-09-1981', 'DD-MM-YYYY'), 1250, 1400, 30);
INSERT INTO EMP VALUES
        (7698, 'BLAKE',  'MANAGER',   7839,
        TO_DATE('01-05-1981', 'DD-MM-YYYY'),  2850, NULL, 30);
INSERT INTO EMP VALUES
        (7782, 'CLARK',  'MANAGER',   7839,
        TO_DATE('09-06-1981', 'DD-MM-YYYY'),  2450, NULL, 10);
INSERT INTO EMP VALUES
        (7788, 'SCOTT',  'ANALYST',   7566,
        TO_DATE('09-12-1982', 'DD-MM-YYYY'), 3000, NULL, 20);
INSERT INTO EMP VALUES
        (7839, 'KING',   'PRESIDENT', NULL,
        TO_DATE('17-11-1981', 'DD-MM-YYYY'), 5000, NULL, 10);
INSERT INTO EMP VALUES
        (7844, 'TURNER', 'SALESMAN',  7698,
        TO_DATE('8-09-1981', 'DD-MM-YYYY'),  1500, 0, 30);
INSERT INTO EMP VALUES
        (7876, 'ADAMS',  'CLERK',     7788,
        TO_DATE('12-01-1983', 'DD-MM-YYYY'), 1100, NULL, 20);
INSERT INTO EMP VALUES
        (7900, 'JAMES',  'CLERK',     7698,
        TO_DATE('3-12-1981', 'DD-MM-YYYY'),   950, NULL, 30);
INSERT INTO EMP VALUES
        (7902, 'FORD',   'ANALYST',   7566,
        TO_DATE('3-12-1981', 'DD-MM-YYYY'),  3000, NULL, 20);
INSERT INTO EMP VALUES
        (7934, 'MILLER', 'CLERK',     7782,
        TO_DATE('23-01-1982', 'DD-MM-YYYY'), 1300, NULL, 10);

CREATE TABLE DEPT
       (DEPTNO NUMBER(2),
        DNAME VARCHAR2(14),
        LOC VARCHAR2(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');

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);

COMMIT;

ALTER TABLE DEPT ADD CONSTRAINT  PK_DEPTNO  PRIMARY KEY(DEPTNO);
ALTER TABLE SALGRADE ADD CONSTRAINT PK_GRADe PRIMARY KEY(GRADE);
ALTER TABLE EMP ADD CONSTRAINT PK_EMP  PRIMARY KEY(EMPNO);

ALTER TABLE EMP ADD CONSTRAINT FK_EMP_DEPT  FOREIGN KEY(DEPTNO) REFERENCES DEPT(DEPTNO);
ALTER TABLE EMP ADD CONSTRAINT FK_EMP_EMP  FOREIGN KEY(MGR) REFERENCES EMP(EMPNO);


CREATE TABLE ANGAJATI AS 
	SELECT EMPNO ID_ANG, ENAME NUME, JOB FUNCTIE, MGR ID_SEF, HIREDATE DATA_ANG, SAL SALARIU, COMM COMISION, DEPTNO ID_DEP 
	FROM EMP;
CREATE TABLE DEPARTAMENTE AS 
	SELECT DEPTNO ID_DEP, DNAME DEN_DEP, LOC LOCATIE 
	FROM DEPT;
CREATE TABLE GRILA_SALARIU AS 
	SELECT GRADE GRAD, LOSAL NIVEL_INF, HISAL NIVEL_SUP 
	FROM SALGRADE;

ALTER TABLE DEPARTAMENTE ADD CONSTRAINT  PK_ID_DEP  PRIMARY KEY(ID_DEP);
ALTER TABLE GRILA_SALARIU ADD CONSTRAINT PK_GRAD PRIMARY KEY(GRAD);
ALTER TABLE ANGAJATI ADD CONSTRAINT PK_ID_ANG  PRIMARY KEY(ID_ANG);

ALTER TABLE ANGAJATI ADD CONSTRAINT FK_ANG_DEPT  FOREIGN KEY(ID_DEP) REFERENCES DEPARTAMENTE(ID_DEP);
ALTER TABLE ANGAJATI ADD CONSTRAINT FK_ANG_ANG  FOREIGN KEY(ID_SEF) REFERENCES ANGAJATI(ID_ANG);

commit;