Semester – IV

18CSU413 DATA BASE MANAGEMENT SYSTEMS - PRACTICAL 4H – 2C

Instruction Hours / week: L: 0 T: 0 P: 4 Marks: Int : 40 Ext : 60 Total: 100

Course Objective
 To Understand the role and nature of relational database management systems in
today's IT environment.
 To Translate written business requirements into conceptual entity-relationship data
models.

Course Outcomes(COs)

1. The Objective of Database Management System includes learning of relational data

model, database design and Transaction model.

1. Create and use the following database schema to answer the given queries.
EMPLOYEE Schema

Field Type NULL KEY DEFAULT

Eno Char(3) NO PRI NIL
Ename Varchar(50) NO NIL
Job_type Varchar(50) NO NIL
Manager Char(3) Yes FK NIL
Hire_date Date NO NIL
Dno Integer YES FK NIL
Commission Decimal(10,2) YES NIL
Salary Decimal(7,2) NO NIL

DEPARTMENT Schema

Field Type NULL KEY DEFAULT

Dno Integer No PRI NULL
Dname Varchar(50) Yes NULL
Location Varchar(50) Yes New Delhi

Query List
1. Query to display Employee Name, Job, Hire Date, Employee Number; for each
employee with the Employee Number appearing first.
2. Query to display unique Jobs from the Employee Table.
3. Query to display the Employee Name concatenated by a Job separated by a comma.
4. Query to display all the data from the Employee Table. Separate each Column by a
comma and name the said column as THE_OUTPUT.
5. Query to display the Employee Name and Salary of all the employees earning more
than $2850.
6. Query to display Employee Name and Department Number for the Employee No=
7900.
7. Query to display Employee Name and Salary for all employees whose salary is not in
the range of $1500 and $2850.
8. Query to display Employee Name and Department No. of all the employees in Dept
10 and Dept 30 in the alphabetical order by name.
9. Query to display Name and Hire Date of every Employee who was hired in 1981.
10. Query to display Name and Job of all employees who don‘t have a current Manager.

11. Query to display the Name, Salary and Commission for all the employees who earn
commission.
12. Sort the data in descending order of Salary and Commission.
13. Query to display Name of all the employees where the third letter of their name is
‗A‘.
14. Query to display Name of all employees either have two ‗R‘s or have two ‗A‘s in
their name and are either in Dept No = 30 or their Manger‘s Employee No = 7788.
15. Query to display Name, Salary and Commission for all employees whose
Commission Amount is 14 greater than their Salary increased by 5%.
16. Query to display the Current Date.
17. Query to display Name, Hire Date and Salary Review Date which is the 1st Monday
after six months of employment.
18. Query to display Name and calculate the number of months between today and the
date each employee was hired.
19. Query to display the following for each employee <E-Name> earns < Salary>
monthly but wants < 3 * Current Salary >. Label the Column as Dream Salary.
20. Query to display Name with the 1st letter capitalized and all other letter lower case
and length of their name of all the employees whose name starts with ‗J‘, ‘A‘ and
‗M‘.
21. Query to display Name, Hire Date and Day of the week on which the employee
started.
22. Query to display Name, Department Name and Department No for all the employees.
23. Query to display Unique Listing of all Jobs that are in Department # 30.
24. Query to display Name, Dept Name of all employees who have an ‗A‘ in their name.
25. Query to display Name, Job, Department No. And Department Name for all the
employees working at the Dallas location.
26. Query to display Name and Employee no. Along with their Manger‘s Name and the
Manager‘s employee no; along with the Employees‘ Name who do not have a
Manager.
27. Query to display Name, Dept No. And Salary of any employee whose department No.
and salary matches both the department no. And the salary of any employee who
earns a commission.
28. Query to display Name and Salaries represented by asterisks, where each asterisk (*)
signifies $100.
29. Query to display the Highest, Lowest, Sum and Average Salaries of all the employees
30. Query to display the number of employees performing the same Job type functions.
31. Query to display the no. of managers without listing their names.
32. Query to display the Department Name, Location Name, No. of Employees and the
average salary for all employees in that department.
33. Query to display Name and Hire Date for all employees in the same dept. as Blake.
34. Query to display the Employee No. And Name for all employees who earn more than
the average salary.
35. Query to display Employee Number and Name for all employees who work in a
department with any employee whose name contains a ‗T‘.
36. Query to display the names and salaries of all employees who report to King.
37. Query to display the department no, name and job for all employees in the Sales
department.