Texas Tech Company Database & Program Design 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 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

System Concept

Context Diagram

Level 0 DFD

Level 1 DFD

Level 2 DFD – Report Processing

Structure Chart

E-R Diagram

Physical Design Request_History(Req_ID, Emp_ID,Tech_ID, Req_desc, Req_Status) Employee (Emp_ID,Comp_ID, Emp_Lname, Emp_Fname, Emp_DOB, Emp_Phone) Reserve_Emp ( ResComp_ID, Emp_ID, AssignDate_From, AssignDate_To) Request (Req_ID, Emp_ID, Req_Details, Req_Date, Req_Status) Repair_Repn_Req (Repn_ID, Req_ID) Solution(Sol_ID, Tech_ID, Sol_Time, Sol_Date) Reserve_Comp(ResComp_ID,ResComp_Name, ResComp_RAM, ResComp_HardDisk, ResComp_OS) Repair_Repn(Repn_ID, Repn_Lname, Repn_Fname, Repn_DOB, Repn_Phone) Repn_Tech(Tech_ID, Repn_ID, Req_ID) Technician(Tech_ID, Tech_Lname, Tech_Fname, Tech_DOB, Tech_Phone) Tech_ReserveComp(Tech_ID, ResComp_ID, Emp_ID) CompHist_Tech(CompHist_ID, Tech_ID, Date_Closed,Seviarity) Comp_Hist(CompHist_ID, Comp_ID, Comp_Hist) Computer_Data(Comp_ID,Emp_ID, Comp_Name, Comp_RAM, Comp_HardDisk, Comp_OS)

Request Form

QUESTIONS ???