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Database Management System (CS403)
Assignment No.1
Total Marks: 10
Your assignment must be uploaded before or on 9th November 2012.
Rules for Marking
It should be clear that your assignment will not get any credit if:
1. The assignment is submitted after due date
2. The assignment is copied
The objectives of this assignment are,
1. Giving the idea of the most common tool used for designing database systems i.e. Data Flow Diagram. It is used to design systems graphically and expresses different details of system in different DFD levels.
2. To become familiar with the flow of data between different processes and to hide complexities in any given system.


In this course we are going to develop a complete physical database for “Trade Management System” that will computerize all the necessary Trade Management processes for a small business shop, BEST Mart. For this we will divide this whole project in small 4 to 5 assignment chunks and will try to cover every phase of database development life cycle from scratch to execution. Scenario for the Trade Management System is given below.
There exists a BEST Mart- a shopping centre, whose owner wants to computerize his business by developing Trade Management System. For this, owner hires a Database Administrator and put up a real world scenario and requirements as given below:
Trade Management System permits users to proficiently initiate and evaluate the process of requirement for the BEST Mart. Procedure begins when a client comes to BEST Mart, selects the cart and place the things in cart and goes towards salesman. The salesman examines the code of each selected item. On entry system will display invoice with some details like name of the product, its related magnitude/quantity and total sales line items along with total bill. After placing order, client will ahead to accountant counter to pay bill.
Trade Management System will support both types of customers, Registered and Non-Register. For Registered customers it is necessary for system to check whether he/she is on credit bases or not. For non-registered customers, it must have to be registered only by
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the Owner of the BEST Mart. Information about number of creditors and debtors are
known by the accounts department.
System will show flexibility in a sense that it should accept all payment methods i.e.
cash, credit and cash with credit.
Same is the scenario with Administrator/Owner of BEST Mart to purchase items from
different vendors on cash, credit or combination of two. The stock department and Sale
department will need to generate reports about stock status sale in different time span.
Task Description:
This Assignment is starting phase and in this assignment you will focus only on the
tasks given below:
1. You are required to identify all the processes in the system.
2. You are required to mention all the data stores in which data is stored.
3. Find out all the external entities interacting with the system
4. Create a Context level DFD
5. Create a level zero DFD
6. Create a detailed DFD of every process if needed
You have to perform all these steps give above in your solution file.

Use all concepts you have studied so far and techniques discussed particularly
in lecture 5 and 6 regarding this assignment.
Drawing Final Data Flow Model:
You can use any tool for drawing like MS Office or Visio.
Important things to consider:
1. As happens in real world that everyone visualize a problem in different way so the
solutions of all students should be according to their own thinking not taken from
some source.
2. As this is preliminary phase of our system so it is recommended that you identify
as much processes and their relationships as you can (some of them may be
eliminated in coming assignments).

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Replies to This Discussion

Sis fozia very sad. ap logon ko q bawkoof bna rahi ho, i know u know abt da complete solution of the assignment. Aj last day ha you must upload complete solution. jo apne file upload ki ha us main apne just CDFD bnai ha. jo k incomplete ha. Iskay ilawa Jo baki DFD's hain Level zero nd DDFD unka b apne sol nai btaya. Km az km bnda uska idea he day daita ha. But sorry to say inspite of this k apko sol pta tha aur ap nay share nai kia. By da way Allah Bless you

Complete CS403 Assignment#01 Solution


1. You are required to identify all the processes in the system:

The processes in the system are:

Client/ Customers comes to BEST Mart, Selects the Cart, Goes towards Card, Place the things in Cart, Examines the Code, Placing the Order, System displays invoice, Pays bill, To check, Information about NO.s of Creditors and debtors, Shows flexibility, Accept all payment methods, Purchase items by Owner, Sales report generate by Stock & Sales Department.
2. You are required to mention all the data stores in which data is stored:

Data Stores: Cart, Entry System, checking, Invoice.

Data Flow: Invoices show (total bill etc), Goes, Ahead towards Salesman, to credit bases or nor, Payment methods (accept), Show flexibility, Stock Status.

3. Find out all the external entities interacting with the system: 
External Entities: Customer/ Client, Accountant Counter, Owner /Administrator of the BEST Mart, Accountant Department, Creditors, Vendors, Stock and Sales Department.
4. Create a Context level DFD

sab nay akheer eh bongia mari ha yar.. waisay.. kya discas kia ha... 6 part ma.... tw.. i think ni zrort detail DFD ki

plz atleast now upload the final solution of this assignment............



example of online bookshop dfd

CS403 Assigment#01 Solution by VU



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