NAME- AASHAY KUMAR
REG.NO- 20BCE2180
School of Computer Science and Engineering
CSE2004 - Database Management Systems Lab
Cycle Sheet - I
Aim: To study Data Definition and Data Manipulation commands.
Consider the following schema:
Table Name: Employee
Attribute
First Name
Mid Name
Last Name
SSN Number
Birthday
Address
Sex
Salary
Supervisor SSN
Department Number
Data Type
VARCHAR(15)
CHAR(2)
VARCHAR(15)
CHAR(9)
DATE
VARCHAR(50)
CHAR(1)
NUMBER (7)
CHAR(9)
NUMBER (5)
Table Name: Department
Attribute
Department Name
Department Number
ManagerSSN
ManageStartDate
Data Type
Varchar(15)
Number(5)
CHAR(9)
DATE
Table Name: Project
Attribute
Project Name
Project Number
Project Location
Department Number
Data Type
VARCHAR(15)
NUMBER(5)
VARCHAR(15)
NUMBER(5)
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
Data For Employee Table
FName
Doug
Joyce
Frankin
Jennifer
John
Ramesh
Mini
t
E
T
S
B
K
LName
Gilbert
PAN
Wong
Wallace
Smith
Narayan
SSN
123
124
125
564
678
234
BDate
Address
09-JUN-1968
07-FEB-1973
08-DEC-1972
20-JUN-1983
09-JAN-1987
15-SEP-1985
Chennai
Vellore
Delhi
Chennai
Madurai
Bangalore
Data For Department table
DName
Administration
Headquarter
Finance
IT
DepNo
2
1
3
4
MgrSSN
564
678
234
123
MgrStartDate
03-Jan-2012
16-Dec-2014
18-May-2013
12-Jun-2015
Data For Project
PName
ProjectA
ProjectB
ProjectC
ProjectD
ProjectE
PNumber
3388
1945
6688
2423
7745
Plocation
Delhi
Hyderabad
Chennai
Chennai
Bangalore
DepNo
1
1
2
2
3
Sex
Salary
M
F
M
F
M
M
80000
70000
40000
43000
30000
38000
SuperSSN
123
123
124
124
DepNo
1
1
2
2
1
3
NAME- AASHAY KUMAR
CREATING TABLE
create table Employee
(
"First Name" varchar(15),
"Mid Name" char(2),
"Last Name" varchar(15),
"SSN Number" char(9),
Birthday date,
Address varchar(50),
Sex char(1),
Salary number(7),
"Supervisor SSN" char(9),
"Department Number" number(5)
)
create table Department
(
"Department Name" varchar(15),
"Department Number" number(5),
"Manager SSN" char(9),
ManagerStartDate date
)
create table Project
(
"Project Name" varchar(15),
"Project Number" number(5),
"Project Location" varchar(15),
"Department Number" number(5)
)
REG.NO- 20BCE2180
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
Exercise-I:
1. Insert the data given above in both employee, department and project
tables.
 insert into Employee values (' Doug' , ' E', ' Gilbert' , ' 123' ,' 09-JUN-1968', '
Chennai','M','80000',' ','1')
 insert into Employee values (' Joyce' , ' ', 'PAN' , ' 124' ,' 07-FEB-1973', '
Vellore','F','70000',' ','1')
 insert into Employee values (' Franklin' , ' T', 'Wong' , ' 125' ,' 08-DEC-1972',
'Delhi','M','40000','123','2')
 insert into Employee values (' Jennifer' , ' S', 'Wallace' , ' 564' ,' 20-JUN-1983',
'Chennai','F','43000','123','2')
 insert into Employee values (' John' , ' B', 'Smith' , '678' ,' 09-JAN-1987',
'Madurai','M','30000','124','1')
 insert into Employee values (' Ramesh' , ' K', 'Narayan' , ' 234' ,' 15-SEP-1985',
'Bangalore','M','38000','124','3')
 insert into Department values( ' Administration','2','564','03-JAN-2012')
 insert into Department values(' Headquarter','1','678','16-DEC-2014')
 insert into Department values ('Finance','3','234','18-MAY-2013')
 insert into Department values (' IT','4','123','12-JUN-2015')
 insert into Project values('ProjectA','3388','Delhi','1')
 insert into Project values('ProjectB','1945','Hyderabad','1')
 insert into Project values('ProjectC','6688','Chennai','2')
 insert into Project values('ProjectD','2423','Chennai','2')
 insert into Project values('ProjectE','7745','Bangalore','3')
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
2. Display all the employees’ information.
 select * from Employee
3. Display Employee name along with his SSN and Supervisor SSN.
 select "First Name","Mid Name","Last Name","SSN Number","Supervisor SSN" from
Employee
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
4. Display the employee names whose bdate is ’20-JUN-1983’.
 select "First Name","Mid Name","Last Name" from Employee where Birthday = '20-Jun1983'
5. Display salary of the employees without duplications.
 select distinct Salary from Employee
6. Display the MgrSSN, MgrStartDate of the manager of ‘Finance’ department
 select "Manager SSN",ManagerStartDate from Department where "Department
Name" = 'Finance'
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
7. Modify the department number of an employee having fname as ‘Joyce’ to 2
 update Employee set "Department Number" = '2' where "First Name" = 'Joyce'
8. Alter Table department add column DepartmentPhoneNum of NUMBER data type and
insert values into this column only.
 alter table Department add DepartmentPhoneNum number(10)
9. Alter table department to modify the size of DepartmentPhoneNum.
 alter table Department modify DepartmentPhoneNum number(15)
10.Modify the field name DepartmentPhoneNum of departments table to PhNo.
 alter table Department rename column DepartmentPhoneNum to PhNo
NAME- AASHAY KUMAR
11. Rename Table Department as DEPT.
 alter table Department rename to DEPT
12. Alter Table department remove column PhNo.
 alter table Dept drop column phno
13. Create a table COPYOFDEPT as a copy of the table DEPT.
 create table COPYOFDEPT as select * from DEPT
REG.NO- 20BCE2180
NAME- AASHAY KUMAR
14. Delete all the rows from COPYOF DEPT table.
 delete from COPYOFDEPT
15. Remove COPYOF DEPT table.
 drop table COPYOFDEPT
REG.NO- 20BCE2180
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
Exercise: II
Aim: To use constraints and formulate the tables to have consistent data.
Table Name: Employee
Attribute
First Name
Mid Name
Last Name
SSN Number
Birthday
Address
Sex
Salary
Supervisor SSN
Data Type
Varchar (15)
Char(2)
Varchar (15)
Char (9)
Date
Varchar (50)
Char(1)
Number (7)
Char (9)
Department number
Number(5)
Constraint
Not Null
Not Null
Primary Key
Sex In (M,F,m,f)
Default 800
Foreign Key Employee (SSN)
on delete set null
Foreign key to department
number of department table on
delete cascade
Table Name : Department
Attribute
Department Name
Department number
Manager SSN
Data type
Varchar(15)
INT(5)
Char (9)
Manage start date
Date
Constraint
Not Null
Primary key
Foreign key-Employee (SSN)
on delete set null
Table Name: Project
Attribute
Project Name
Project number
Project Location
Department Number
Data type
Varchar2(15)
Number(5)
Varchar2(50)
Number(5)
Constraint
Not Null
Primary key
Foreign Key –Department (dep
no ) on delete set null
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
I. Add the above mentioned constraints to employee, project and department tables using
alter table statement.
 ALTER TABLE
Employee MODIFY "First Name" NOT NULL
 ALTER TABLE Employee
MODIFY "Last Name" NOT NULL
 ALTER TABLE Employee
ADD CONSTRAINT "Employee pk" PRIMARY KEY ("SSN Number")
 ALTER TABLE Employee
ADD CONSTRAINT "check 1" CHECK (sex IN ('M', 'F', 'm', 'f'));
 ALTER TABLE Employee
MODIFY Salary DEFAULT 800
 ALTER TABLE Employee
 ADD CONSTRAINT "Employee fk1" FOREIGN KEY ("Supervisor SSN")
REFERENCES Employee ("SSN Number")
 ON DELETE SET NULL
 ALTER TABLE DEPT MODIFY "Department Name" NOT NULL
 ALTER TABLE DEPT ADD CONSTRAINT "dept pk" PRIMARY KEY
("Department Number")
 ALTER TABLE DEPT ADD CONSTRAINT "dept fk 1" FOREIGN KEY
("Manager SSN") REFERENCES Employee ("SSN Number")
 ON DELETE SET NULL
 ALTER TABLE Project MODIFY "Project Name" NOT NULL
 ALTER TABLE Project ADD CONSTRAINT "project pk" PRIMARY KEY
("Project Number")
 ALTER TABLE Project ADD CONSTRAINT "project fk1" FOREIGN KEY
("Department Number") REFERENCES DEPT ("Department Number")
 ON DELETE SET NULL
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
 ALTER TABLE Employee
 ADD CONSTRAINT "employee fk2" FOREIGN KEY ("Department Number")
REFERENCES DEPT ("Department Number")
 ON DELETE CASCADE
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
II. Execute the following Query on the Db to display and discuss the integrity constraints violated
by any of the following operations
1. Insert ('Robert', 'F', 'Scott', '235', '21-JUN-1990', 'Bangalore', M, 58000, '100', 1 ) into
EMPLOYEE.
 insert into EMPLOYEE values ('Robert', 'F', 'Scott', '235', '21-JUN-1990', 'Bangalore',
M, 58000, '100', 1 )
2. Insert ( 'ProjectF', null, 'Chennai', 3 ) into Project.
 insert into Project values ('ProjectF', NULL, 'Chennai', 3)
3. Insert ( 'ProjectF', 1234, 'Chennai', 4 ) into Project.
 INSERT INTO Project
 VALUES ('ProjectF', 1234, 'Chennai', 4)
III Alter the tables to
1. Drop Foreign key defined on SuperSSN and add it using Alter table command.
 alter table Employee
 drop constraint "Employee fk1"
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
2. Make name of Project as Unique and sex of employee as not null.
 alter table Project add constraint "Project uq1" UNIQUE ("Project Name")
 alter table Employee modify Sex not null
3. In the copy table add the columns door no, street, city, State, Continent.
4. Make salary of employee to accept real values.
 alter table Employee modify Salary NUMBER
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
Exercise: III
Operators and Functions
Aim: To understand different operators and types of function in SQL
1. Find the employee names whose salary lies in the range between 30000 and 70000.
 select "First Name","Mid Name" ,"Last Name" , Salary from Employee where Salary >=
30000 and Salary <= 70000
2.Find the employees who have no supervisor.
 select "First Name","Mid Name","Last Name" from employee where "Supervisor SSN" is
null
3.Display the bdate of all employee s in the format ‘DDthMonthYYYY’.
 select to_char(Birthday, 'DDth Month YYYY') Birthday from Employee
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
4. Display the employee names whose bdate is on or before 1978.
 select "First Name", "Mid Name", "Last Name" from Employee where Birthday <= date
'1978-12-31'
5. Display the department name that starts with ’M’.
 select "Department Name" from DEPT where "Department Name" like'm%'
6. Display the department names’ that ends with ‘E’.
 select "Department Name" from DEPT where "Department Name" like'%e'
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
7. Display the names of all the employees having supervisor with any of the following SSN
123, 124.
 select "First Name","Mid Name","Last Name" from Employee where " SSN Number" =
123 or "SSN Number" = 124
8. Display all the department names in upper case and lower case.
 select upper(“Department Name”) from DEPT
 select lower(“Department Name”)from DEPT
9. Display the first four characters and last four of the department names using substring
function.
 select SUBSTR("Department Name", 1, 4) as "First fOUR", SUBSTR("Department Name",
-4) as "Last four" from DEPT
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
10. Display the substring of the Address (starting from 5th position to 11 th position) of all
employees.
 select SUBSTR(Address, 5, 7) as address from Employee
11. Display the Mgrstartdate on adding three months to it.
 select ADD_MONTHS(ManagerStartDate, 3) AS MgrStartdate from DEPT
12. Display the age of all the employees rounded to two digits.
 select ROUND((SYSDATE - Birthday)/365, 2) AS age FROM Employee
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
13. Find the last day and next day of the month in which each manager has joined.
 select LAST_DAY(ManagerStartDate) as NEXT_DAY, Managerstartdate + 1 AS
LAST_DAY FROM DEPT
14. Print a substring from the string ‘Harini’.
 select substr('Harini', 2, 4) as substring FROM DUAL
15. Replace the string ‘ni’ from ‘Harini’ by ‘sh’.
 select replace('Harini', 'ni', 'sh') from DUAL
NAME- AASHAY KUMAR
REG.NO- 20BCE2180
16. Print the length of all the department names.
 select LENGTH("Department Name") From Department
17. Display the date after 10 months from current date.
 SELECT ADD_MONTHS(SYSDATE, 10) FROM DUAL
18. Display the next occurrence of Friday in this month.
 select NEXT_DAY(SYSDATE, 'Friday') FROM DUAL
 where NEXT_DAY(SYSDATE, 'Friday') <= date '2021-08-29'
19. Display the project location padded with **** on left side.
 select LPAD("Project Location", LENGTH("Project Location") + 4, '****') from Project
NAME- AASHAY KUMAR
REG.NO- 20BCE2180