System Analysis and design

Here is the recap of problem 5. you only need to answer problem 6

Perfect Pizza wants to install a system to record orders for pizza and chicken wings. When regular customers call Perfect Pizza on the phone, they are asked their phone number. When the number is typed into a computer, the name, address, and last order date is automatically brought up on the screen. Once the order is taken, the total, including tax and delivery, is calculated. Then the order is given to the cook. A receipt is printed. Occasionally, special offers (coupons) are printed so the customer can get a discount. Drivers who make deliveries give customers a copy of the receipt and a coupon (if any). Weekly totals are kept for comparison with last years performance.

6. Draw a context-level data flow diagram for Perfect Pizza using the following items (Problem 5)

Entities

Customer

Management

Cook

Process

Customer Order System

Data Flows

Phone Number

Customer Order

Customer Information

Delivery

Performance Statistics

Cook Order

Product