University:
Princeton University
Course:
COS 226 | Algorithms and Data Structures
Academic year:

2023
Views:

96

Pages:

3
Author:

Aurora Howard

Exercise 2: Online Shopping System Create a Data Flow Diagram (DFD) for an Online Shopping System. In this system, a Customer can browse through products available on the platform, add desired items to a shopping cart, and proceed to place an order. Once the order is placed, the Order Management System processes it and forwards the details to the Warehouse for packaging and dispatch. After the order is packaged, the Inventory is updated to reflect the reduced stock, and the order is handed off for Delivery. The system should also include a Payment System that handles the transaction from the customer. Draw a Level 0 and Level 1 DFD to demonstrate the flow of information. Checking Order Id Id Item status Customer Warehouse 0 Invoice Complete order Payment request Online shopping system Prepare adjust Id Inventory Update amount of items Shipping Id Delivery 1 Id Order Checking Id Warehouse Customer Item status Complete order Order management Payment request Invoice 2 Order database Payment process 3 Id Inventory Update amount of items Adjusting and shipping Prepare Adjust Id Delivery Delivery Inventory database Delivery status 1.1 Id Id Checking Order Customer Warehouse Confirm order 1.2 Items status Report Warehouse status Order database 2.1 Id Payment request Customer Order database Confirm payment 2.2 Invoice Payment system 3.1 Update amount of items Id Inventory Adjust Inventory database Inventory management 3.2 Prepare Id Shipping management Shipping Delivery status Delivery