Create view ans sequence
- 1. create table dept( deptno number(2,0), dname varchar2(14), loc varchar2(13), constraint pk_dept primary key (deptno) ); create table emp( empno number(4,0), ename varchar2(10), job varchar2(9), mgr number(4,0), hiredate date, sal number(7,2), comm number(7,2), deptno number(2,0), constraint pk_emp primary key (empno), constraint fk_deptno foreign key (deptno) references dept (deptno) ); insert into DEPT (DEPTNO, DNAME, LOC) 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') ; insert into emp values( 7839, 'KING', 'PRESIDENT', null, to_date('17-11-1981','dd-mm-yyyy'), 5000, null, 10 ); insert into emp values( 7698, 'BLAKE', 'MANAGER', 7839, to_date('1-5-1981','dd-mm-yyyy'), 2850, null, 30 ); insert into emp values( 7782, 'CLARK', 'MANAGER', 7839, to_date('9-6-1981','dd-mm-yyyy'), 2450, null, 10 ); insert into emp values( 7566, 'JONES', 'MANAGER', 7839,
- 2. to_date('2-4-1981','dd-mm-yyyy'), 2975, null, 20 ); insert into emp values( 7788, 'SCOTT', 'ANALYST', 7566, to_date('13-JUL-87','dd-mm-rr') - 85, 3000, null, 20 ); insert into emp values( 7902, 'FORD', 'ANALYST', 7566, to_date('3-12-1981','dd-mm-yyyy'), 3000, null, 20 ); 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('20-2-1981','dd-mm-yyyy'), 1600, 300, 30 ); insert into emp values( 7521, 'WARD', 'SALESMAN', 7698, to_date('22-2-1981','dd-mm-yyyy'), 1250, 500, 30 ); insert into emp values( 7654, 'MARTIN', 'SALESMAN', 7698, to_date('28-9-1981','dd-mm-yyyy'), 1250, 1400, 30 ); insert into emp values( 7844, 'TURNER', 'SALESMAN', 7698, to_date('8-9-1981','dd-mm-yyyy'), 1500, 0, 30 ); insert into emp values( 7876, 'ADAMS', 'CLERK', 7788, to_date('13-JUL-87', 'dd-mm-rr') - 51,
- 3. 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( 7934, 'MILLER', 'CLERK', 7782, to_date('23-1-1982','dd-mm-yyyy'), 1300, null, 10 ); select ename, dname, job, empno, hiredate, loc from emp, dept where emp.deptno = dept.deptno order by ename; CREATE VIEW empvu80 AS SELECT empno,ename,sal FROM emp WHERE deptno = 40; CREATE OR REPLACE VIEW empvu20 AS SELECT * FROM emp WHERE deptno = 20 WITH CHECK OPTION CONSTRAINT empvu20_ck ; CREATE OR REPLACE VIEW empvu10 (empno,ename,job) AS SELECT empno,ename,job
- 4. FROM emp WHERE deptno= 10 WITH READ ONLY ; DROP VIEW empvu80; CREATE SEQUENCE dept_deptid_seq INCREMENT BY 10 START WITH 50 MAXVALUE 99 NOCACHE NOCYCLE; INSERT INTO dept(deptno, dname,loc) VALUES (dept_deptid_seq.NEXTVAL, 'Support','Bombay'); SELECT dept_deptid_seq.CURRVAL FROM dual; ALTER SEQUENCE dept_deptid_seq INCREMENT BY 20 MAXVALUE999999 NOCACHE NOCYCLE; DROP SEQUENCEdept_deptid_seq;
- 5. CREATE INDEX emp_last_name_idx ON emp(ename); DROP INDEX emp_last_name_idx; CREATE SYNONYM d_sum FOR dept_sum_vu;