Texas Tech Company

Data Flow Diagram

Sabrina ChenYen Kuang Chuang

Krishna Prasad

BackgroundTexas Tech Company is an information technology services companyTexas Tech makes software for their clients with the desired feature and functionNecessary 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 DiagramEntities:- Employee- Technician- Repair Representative

Context Diagram

Level 0 DiagramEntities:- 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

QUESTIONS???