Computer E-ssentials Group : Will Howell Tausif Rajkotwala Komal Chandarana

Business Requirements  Provide online customer access to assemble and purchase components  Track customer information  Generate Sales and Inventory Reports  Provide billing process  Provide product search capability  Track inventory count and reorder value

Context Level  Entities Customers Employee  Data Flow to and from external entities

Context Diagram

Level 0  Entities Customers Employee  Processes Customer Information Customer Order Manage Inventory Reporting

Level 0 (Cont…)  Data Stores Inventory Customer Data Inventory

Level 0 DFD

Level 1 – Customer Information  Entities Customers  Processes Login Create Account  Data Stores Customer Data

Level 1 – Customer Info DFD

Level 1 – Reports  Entities Employee  Processes Inventory Reports Select Report Sales Reports  Data Stores Inventory Orders

Level 1 – Reports DFD

Level 1 – Customer Order  Entities Customers  Processes Order Confirmation Shipping Information Payment Information Submit Order  Data Stores Inventory Orders

Level 1 – Customer Order DFD

Level 2 – Order Confirmation  Entities Customers  Processes Search Product Order Recap  Data Stores Inventory Orders

Level 2 – Order Confirmation DFD

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