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Data Flow Diagrams

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Table 1:Use Case ID:1

Element	Description and Main Properties
Name of use case	Work order system
Actors	Customer(can add account, manage account, view items, place order) Admin(can approve or reject accounts, add items, update items, add and update Promotions)
Triggers	1. When customer registers for an account then admin can confirm or reject it. 2. Inventory is updated after every order completed. 3. Every item listing triggers simultaneous access by customer.
Date	Completed on 11-04-2014

Table 2:Use Case ID:2

Element	Description and Main Properties
Name of use case	View Items
Actor	Customer(can search items, browse items, add to cart)
Triggers	1. When customer adds any item to cart, it prompts for customer authentication.
Date	Completed on 11-04-2014