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SQL> create table ass9dept(dept_id number(4) primary
key,d_name varchar2(15));
Table created.
SQL> create table ass9employee(eid number(4) primary
key,e_name varchar(10),salary number(7) not null, grade
varchar2(10),dept_no number(4),gender varchar2(1),check(gender
in('M','F')),foreignkey (dept_no) references ass9dept(dept_id) on
delete cascade);
Table created.SQL> insert into ass9dept
values(11,'Sales');
SQL> insert into ass9dept values(12,'Developer');
1 row created.
SQL> insert into ass9dept values(13,'Marketing');
1 row created.
SQL> insert into ass9employee
values(&eid,'&enmae',&salary,'&grade',&dept_no,'&gender');
Enter value for eid: 11Enter value for enmae: AnishEnter value
for salary: 50000Enter value for grade: ManagerEnter value for
dept_no: 12Enter value for gender: Mold 1: insert into ass9employee
values(&eid,'&enmae',&salary,'&grade',&dept_no,'&gender')new
1: insert into ass9employee
values(11,'Anish',50000,'Manager',12,'M')
1 row created.
SQL> /
Enter value for eid: 12Enter value for enmae: PoonamEnter value
for salary: 60000Enter value for grade: Soft. dev.Enter value for
dept_no: 12Enter value for gender: Fold 1: insert into ass9employee
values(&eid,'&enmae',&salary,'&grade',&dept_no,'&gender')new
1: insert into ass9employee values(12,'Poonam',60000,'Soft.
dev.',12,'F')
1 row created.
SQL> /
Enter value for eid: 13Enter value for enmae: AditiEnter value
for salary: 40000Enter value for grade: ClerkEnter value for
dept_no: 11Enter value for gender: Fold 1: insert into ass9employee
values(&eid,'&enmae',&salary,'&grade',&dept_no,'&gender')new
1: insert into ass9employee
values(13,'Aditi',40000,'Clerk',11,'F')
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1 row created.
SQL> create table ass9project(e_id number(4),p_name
varchar2(13),foreign key (e_id) references ass9employee (eid));
Table created.
SQL> insert into ass9project values(11,'DB');
1 row created.
SQL> insert into ass9project values(12,'DB');
1 row created.
SQL> insert into ass9project values(12,'CN');
1 row created.
SQL> insert into ass9project values(11,'HM');
1 row created.
SQL> insert into ass9project values(13,'HM');
1 row created.
SQL> insert into ass9project values(13,'Library');
1 row created.
SQL> create index ass9index on ass9employee(e_name);
Index created.
SQL> select * from ass9employee;
EID E_NAME SALARY GRADE DEPT_NO G---------- ----------
---------- ---------- ---------- -
11 Anish 50000 Manager 12 M12 Poonam 60000 Soft. dev. 12 F13
Aditi 40000 Clerk 11 F
SQL> alter table ass9employee rename column e_name to
empname;
Table altered.
SQL> select * from ass9employee;
EID EMPNAME SALARY GRADE DEPT_NO G---------- ----------
---------- ---------- ---------- -
11 Anish 50000 Manager 12 M12 Poonam 60000 Soft. dev. 12 F13
Aditi 40000 Clerk 11 F
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SQL> select * from ass9employee where empname like 'A%';
EID EMPNAME SALARY GRADE DEPT_NO G---------- ----------
---------- ---------- ---------- -
11 Anish 50000 Manager 12 M13 Aditi 40000 Clerk 11 F
SQL> select e.empname from ass9employee e,ass9project p where
e.eid=p.e_id and p.p_name='DB' union select e.empname from
ass9employee e,ass9project p where e.eid=p.e_id and
p.p_name='CN';
EMPNAME----------AnishPoonam
SQL> select e.empname from ass9employee e,ass9project p where
e.eid=p.e_id and p.p_name='DB' intersect select e.empname from
ass9employee e,ass9project p where e.eid=p.e_id and
p.p_name='CN';
EMPNAME----------Poonam
SQL> select e.empname from ass9employee e,ass9project p where
e.eid=p.e_id and p.p_name='DB' minus select e.empname from
ass9employee e,ass9project p where e.eid=p.e_id and
p.p_name='CN';
EMPNAME----------Anish
SQL>
