The document describes a database design for a company called New Project Ltd. that provides staffing services for various projects. It includes 9 entities such as clients, projects, employees, and 9 corresponding tables in the database design. The tables go through normalization up to 3NF. Primary and foreign keys are defined for each table. Relationships between the tables are also described.

1. NEW PROJECT LIMITED
Batch Code: Case Study 3
Start Date: JUNE 6TH, 2014 End Date: June
13th, 2014
Name Coordinator: Miss Titi
Name of Developer: BAMITOGBA TEMITAYO
Date of Submission: June 13TH, 2014

2. NIIT
Certificate
This is to certify that this report titled New Project embodies the original work
done by Bamitogba Temitayo in partial fulfillment of their course requirement
at NIIT.
Coordinator:
Miss Titi.

3. ACKNOWLEGDEMENT
I have benefitted a lot from the encouragements and suggestions given to
me by Ms. Titi during the planning of this project.

4. SYSTEMANALYSIS
System summary:New Project Ltd. is a company known for
providing staff on contract for various project assignments. The
company is also known for providing qualified and skilled staff that
can fulfill the project requirements efficiently. New Project employs
professionals from various fields that match the requirements of
clients.

5. Entities
Number of entities: 9
Name of entities:
1. Client
2. Project
3. Employee
4. Time card
5. Expenses
6. Work
7. Payments
8. Credit card
9. Bill

6. Attributes:
The various entities and their attributes are listed in the followingtable.
Entity Attributes
Client Clientcode
Address
Contact Person
Company Name
Country
Phone
Project Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date
Employee Employee Code
Employee Name
Address
Country
Work Phone
BillingRate
Time Card Time Card Code
Employee Code
Expenses Time Card Expenses Code
Expense Description
Expense Code ID
Expense Code
Expense Date
Expense Amount
Work Work Code
Work Code ID
Work Description
Work Date
Project Code
Payment Payment Code
Payment Mode ID
Payment Mode Name
CorrespondingProjectCode
Payment Amount
Payment Date

7. Credit Card Card Holder’s Name
Card Number
Expiry Date
Bill Bill Hours
Bill Rate

8. e/r diagram
TO
CLIENT
T
NEEDS EMPLOYEE
TO
DO
PROJECT
MAKE
WORK
MAKES
EXPENSESTO
PAYMENT
TIME CARD
GIVEN
TO
THROUGH
CREDIT
CARD
Client
Code
Address
Contact
Person
Company
name
y Name
Country
Phone
Employee
Code
Employee
Name Address
Work Phone
Billing Rate
Country
Time Card
Code
Employee
Code
Project
Code
Project
Name
Start
Date
End Date
Project
Description
Estimate bill
Expense
Date
Expense
Amount
Expense
Code
Expense
Code ID
Time Card
Expenses
Code
Expenses
Description
Work code ID
Work
Description
Project
code
Work
Code
Work date
BILL
IS
GIVEN
Billing
Rate
Billed
Hours
Payment
Code
Payment
mode ID
Payment
Mode
Name
PaymentDate
Payment
Amount
Corresponding
Project Code Expiry Date
Card number
Cardholder’s
name

9. TABLES
Number of Tables: 9
Structure of Tables: The table structures are shown below
Client [Entity] Project [Entity] Employee [Entity]
Client
Client Code
Address
Contact Person
Company Name
Country
Phone
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

10. Time Card [Entity] Expenses [Entity] Work Details [Entity]
Time Card
Time Card Code
Employee Code
Expenses
Time Card Expense Code
Expense Description
Expense Code ID
Expense Code
Expense Date
Expense Amount
Work Details
Work Code ID
Work Code
Work Description
Work Date
Project Code

11. Payments [Entity] Credit Card [Entity] Bill [Entity]
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project Code
Payment Amount
Payment Date
Credit Card
Card Holder’s Name
Card Number
Expiry Date
Bill
Billed Hours
Billing Rate
Bill
Billed Hours
Billing Rate

12. TABLES AFTER 1 NF
The tables are already in 1 NF. The structures are shown here
Client Project Employee
Client
Client Code
Address
Contact Person
Company Name
Country
Phone
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

13. Time Card Expenses Work Details
Time Card
Time Card Code
Employee Code
Expenses
Time Card Expense Code
Expense Description
Expense Code ID
Expense Code
Expense Date
Expense Amount
Work Details
Work Code ID
Work Code
Work Description
Work Date
Project Code

14. Payments Credit Card Bill
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project
Code
Payment Amount
Payment Date
Credit Card
Card Holder’s Name
Card Number
Expiry Date
Bill
Billed Hours
Billing Rate

15. TABLES AFTER 2 NF
The tables are already in 2NF as the attributes in each table depend on the primary key. The
table structures are shown here.
Client Project Employee
Client
Client Code
Address
Contact Person
Company Name
Country
Phone
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

16. Time Card Expenses Work Details
Work Details
Work Code ID
Work Code
Work Description
Work Date
Project Code
Expenses
Expense Code
Expense Description
Expense Code ID
Time Card Expense Code
Expense Date
Expense Amount
Time Card
Time Card Code
Employee Code

17. Payments Credit Card Bill
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project Code
Payment Amount
Payment Date
Credit Card
Card Holder’s Name
Card Number
Expiry Date
Bill
Billed Hours
Billing Rate

18. TABLES AFTER 3 NF
In the Expense table, the attribute Time Card Expense Code depends on Expense Code-ID
and not on Expense Code. Therefore, for the table to be in 3NF, we need to create another
table, Time Card Expense. Also in the Payments table, the attribute Corresponding Project
Code is not depending on the Payment Code but on the Project Code, thus, we need to
create another table, Project Code. In the Work Details table the Project Code is not
depending on the Work Code but on the Client Code so another table is to be created.
Client Project Employee
Client
Client Code
Address
Contact Person
Company Name
Country
Phone
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

19. Time Expenses Work Details
Work Details
Work Code ID
Work Code
Work Description
Work Date
Project Code
Expenses
Expense Code
Expense Description
Expense Code ID
Time Card Expense Code
Expense Date
Expense Amount
Time Card
Time Card Code
Employee Code

20. Bill Payments Credit Card
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project Code
Payment Amount
Payment Date
Bill
Billed Hours
Billing Rate
Credit Card
Card Holder’s Name
Card Number
Expiry Date

21. Time Card Expense Project Code Client Code
Time Card Expense
Expense Code ID
Time Card Expense
Code
Project Code
Project Code
Corresponding Project Code
Client Code
Client Code
Project Code

22. TABLES AFTER DENORMALIZATION
The tables after denormalization are shown below.
Client Project Employee
Client
Client Code
Address
Contact Person
Company Name
Country
Phone
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

23. Time Expenses Work Details
Expenses
Expense Code ID
Expense Description
Expense Code
Time Card Expense Code
Expense Date
Expense Amount
Work Details
Work Code
Work Code ID
Work Description
Work Date
Project Code
Time Card
Time Card Code
Employee Code

24. Payments
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project Code
Payment Amount
Payment Date

25. Project Code Client Code
Project Code
Project Code
Corresponding Project Code
Client Code
Client Code
Project Code

26. The primary and foreign keys (wherever applicable) for each table are listed with their
respective names:
~ Client
Primary Key: Client Code
~ Project
Primary Key: Project Code
~ Employee
Primary Key: Employee Code
~ Time Card
Primary Key: Time Card Code
Foreign Key: Employee Code
~ Expenses
Primary Key Expenses Code ID
~ Work Details
Primary Key: Work Code
Foreign Key: Project Code
~ Bill
Primary Key: Billing Hours
~ Payment
Primary Key: Payment Mode ID
~ Credit Card
Primary Key: Card’s Holders Name
~ Project Code
Primary Key: Project Code

27. ~ Client Code
Primary Key: Client Code
RELATIONSHIPS BETWEEN TABLES
Time Card
Time Card Code
Employee Code
Client
Client Code
Address
Contact Person
Company
Name
Country
Phone
Expenses
Expense Code
Expense Description
Expense Code ID
Time Card Expense Code
Expense Date
Expense Amount
Work Details
Work Code
Work Code ID
Work Description
Work Date
Project Code
Employee
Employee Code
Employee Name
Address
Country
Work Phone
Billing Rate
Project
Project Code
Project Name
Project Description
Estimate Bill
Start Date
End Date

28. Project Code
Project Code
Corresponding Project Code
Payments
Payment Code
Payment Mode ID
Payment Mode Name
Corresponding Project Code
Payment Amount
Payment Date
Client Code
Client Code
Project Code