Texas Tech Company Data Flow Diagram Sabrina Chen Yen Kuang Chuang Krishna Prasad

Background Texas Tech Company is an information technology services company Texas Tech makes software for their clients with the desired feature and function Necessary hardware are also made for the particular software

Requirements Create a user friendly web bases system Easy navigation User should be able to describe the problem in detail A self help option where user could probably fix the problem on his/her own

Requirements contd., Display various commonly occurring problems that the user can choose from User should be notified about the submission of the request User should be notified if request is delegated User should be able to modify, cancel an already created request

Context Diagram Entities: Employee Technician Repair Representative

Context Diagram

Level 0 Diagram Entities: Employee Technician Repair Representative Process: Initiate Problem Request Service Central System Request Processing System Report Processing Data Stores: Repair Representative Data Employee Data Technician Data Computer Data Service Central Log Data Problem Solution/ Description Data Reserved Computer Data

Level 0 DFD

Level 0 DFD

Level 0 DFD

Level 1 Diagram – Initiate Problem Request Entities: Employee Repair Representative Technician Process: Initiate Problem Request Repair Center Process Inform Technician Management Process Data Stores: Service Central Log Data Employee Data Computer Data Problem Solution/ Description Data Technician Data

Level 1 DFD

Level 1 Diagram – Report Processing Entities: Technician Employee Process: Diagnose and Solution Processing Report and Assign Available Computer Data Stores: Service Central Log Problem Solution/Description Data Reserved Computer Data

Level 1 DFD

Level 2 Diagram – Report Processing Entities: Technicina Employee Process: Report Processing Assign Available Computer Problem Ending Acknolwdge Data Stores: Service Central Log Reserved Computer Data Problem Solution/Description Data

Level 2 DFD – Report Processing

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