Question

A mail-order skin and body care company advertises in magazines. Subscribers to magazine initiate most orders by completing coupons directly to the company. The firm also takes orders by telephone, answers inquiries about products, and handles payments and cancellations of orders. Products that have been ordered are sent either directly to the customer or to the company’s regional offices that handle the required distribution. The company has three basic data files, which contain customer mailing information, product inventory information, and billing information based on invoice number. During the next few years, the company expects to become a multimillion-dollar operation. Recognizing the need to computerize much of the mail-order business, the company has begun the process by calling you.


1. Draw a context diagram
2. Prepare the table of entities and activities
3. Draw a detailed Data Flow Diagram ( Level 0 DFD)

Answer 1

CONTEXT DIAGRAM DATA STORAGE NIJJV ENRO. CAN CELAZIOA OS TRAER PAYMENT INVENTORY BUG омралт MAGAZINES DEVER Subscribe CUSTOMER DELIVERY order mail / TELEPHONE INQUERY ANSWER AQUERY DELIVERY REGIONAL OffICE DELIVERY

& Table of Entities and Activities Entities Activities CUSTOMER Subscribe magazine, CUSTOMER Place orded CUSTOMER Inquiry Company ANSWERO The Enquiries Campany DELIVERY TO CUSTOMER or Regional office Regional office DELIVER TO COSTOMER CUSTOMER payment To Campany Company Billing to customers Computer SYSTEM Customek MALLING INFORMAZION CompuTER SYSTEM Product INVENTORY INFO CompuTER SYSTEM BILLING Info.

DETALLE DATA FLOW DIAGRAM DELIVERY Payment ORDER COMPANY 1 INQUIRY ANS, IN QUERY ISSUE DELIVER MAZINE SCRIBE I CUSTOMER & Order & REGIONAL L OFFTER DELIVERY ENVETORY BILLING | SECTION BILL IDATA STORAGE