Answered: Using the example of an online…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Using the example of an online cell-phone apps store, list relevant data flows, data stores, processes, and sources/sinks. Draw a context diagram and a level-0 diagram that represent the apps store. Explain why you chose certain elements as processes versus sources/sinks. Included is the example the book gives

Transcribed Image Text:CUSTOMER TRACKING SYSTEM Customer Information 5.0 Add/Modify Account Profile 1.0 Browse Catalog Chapter 6 Structuring System Requirements: Process Modeling 18 PURCHASING FULFILLMENT SYSTEM Customer Information/ID Item Profile Product Item Customer Information Item Profile Customer Information Customer ID Item Profile Product Item Request D1: Inventory Invoice 4.0 Check Out Process Order Order Check Out/ Customer ID CUSTOMER Purchase Request View Cart Remove Item 2.0 Order Status Request Order Number/ Return Code FIGURE 6-19 Level-0 DFD for the WebStore system. Order Number Order Status Information Order Status Information 6.0 Order Status Request Order Number Items in Cart 3.0 Display Shopping Cart Remove Item/ Product Item Item Profile Cart ID/ Item Profile Cart ID/ Item Profile D2: Shopping Cart

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