طلب مساعدة عاجلة في حل العقدة DFD Diagram

Description of the Company:
DotNet is a company that sells different office supplies and equipment. The Sales and Order department of DotNet is responsible for receiving order request from the customer, preparing quotation and delivers the ordered products to the customer. The manager of Sales and Order department realized that his department needs to automate their current manual system. The following narrative partially describes the processes done in Sales and Order department:
Scenario:
A customer will contact the Sales and Order department through telephone if he wants to request a quotation for an order. A Sales clerk will then complete a Request Quote Form (RQF) by getting the name, address and telephone number and product names the customer wishes to be quoted for.
The RQF is then passed to the Marketing department who will then fill in the purchase price, expected delivery date and product numbers. The marketing department staff that completed the form must stamp a process date in the RQF before returning it to the Sales clerk.
Once the completed RQF is returned to the Sales clerk, a Quotation is prepared base on the RQF. As part of the preparation of the Quotation, the Sales clerk will calculate sales price as 20% higher than the purchase price provided on the RQF. The original quotation is then sent to the customer and a copy of it is placed on Quotation file along with the RQF.
If the customer is satisfied with the quotation, he will fax an order list with the type of payment (either cash on delivery or credit) he wanted and his signature to the Sales and Order department. The Sales clerk will then search for the corresponding quotation of the order list in the Quotation file since the product availability, prices and delivery times vary from week to week. If the corresponding quotation is not found, the order list is returned to the customer. But once the corresponding quotation is found, an order acknowledgement is then sent to the customer. The Sales clerk will photocopy the order list, which is sent to Warehouse. The original order list is then attached to the quotation and is filed in the Order list file. SAD – COMP 0004 – FALL – 11 – CW2 –PMM
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The warehouse will prepare the products listed in the order list. Once the order is complete, the warehouse will stamp "Complete" on the photocopy of the order list, which is then returned back to the Sales department along with products. The Quality Supervisor will then inspect the products and see whether all parts are complete and in good condition. If the product or some parts are damaged or some parts are missing, the Quality Supervisor will return the product to the warehouse for replacement. But if the product is in good condition and all parts are complete, he will stamp the photocopied order list with "Pass Quality" and forward it to the Sales clerk.
The Sales clerk will then search for the original order list and quotation and prepares an invoice. He will then forward the order list and invoice to the Salesperson, who will then collect the products in the warehouse and deliver to the customer. The photocopy of the order list and original quotation is then filed in the Completed Order list file.
Upon delivery, the salesperson will check the type of payment written in the order list. If the type of payment is cash on delivery, he will issue a receipt along with the order list and invoice to the customer upon receiving the payment. On the other hand, if the type of payment is credit, the salesperson will take the signature of the customer on the order list as proof of delivery and issue the invoice. At the end of the day, the salesperson will forward the second copy of the receipts and the signed order list to Accounts department.
Based on the above narration, do the following tasks:
1. Prepare the following for the above mentioned scenario:
a. Context diagram. Your context diagram must show all major inputs and outputs along with external entities. )
b. Level 0 Data Flow Diagram of the system. Your level 0 diagram must reflect all major processes along with all data stores, external entities, required inputs and outputs. ()
c. Level 1 DFD of one of the processes identified in your Level 0 DFD.
)
d. Structured English to express the logic covered in either paragraphs 4-6 or paragraphs 5-7. ()
SAD – COMP 0004 – FALL – 11 – CW2 –PMM
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2. Assume that you are the Systems Analyst handling the project. Based on the above mentioned scenario of the current system prepare the following:
a. Write a descriptive/narrative recommendation on how you are going to automate the current processes through your computerized Information System. )
b. Discuss the hardware and software requirement of your proposed system. Justify why you have chosen these types of hardware or software. )
c. Prepare and design one input or output form for your proposed Information System based on your recommendations in Q2a.)

Note: Zero marks will be awarded if student is absent for presentation. Individual presentation will not be allowed.
Instruction:
 Form a group with at most 3 members.
 Answer all the given questions/tasks.
 One consolidated case study report and presentation slides should be submitted from each group.
 The report should contain the following:
o Title Page (includes the names of each group member)
o Table of Contents
o Answer for tasks 1-2.
o References (book, journals, internet resources used in preparing the presentation report/slides)
 A group will have one presentation schedule and all members should be present, unless due to illness. Otherwise, no marks will be awarded to the absent member. The absent member will be scheduled for another presenta