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ChaPter 3  •  ProjeCt management     55







                                                 Existing System
                              Task                                     Proposed System
                                            Compare performance of
                                            distribution warehouses
                                                                   Compare performance of
                                            by running the summary    distribution warehouses
                                            program.               on the Web-based
                             Method                                dashboard.
                                           Computer programs are
                                           run when needed; processing   Updates occur immediately;
                                                                  processing is done online.
                                           is done from the workstation.
                            Personnel
                                           Distribution manager
                            When and how                          Distribution manager
                                          Daily:
                                                                  Daily:
                                           Enter shipments on Excel
                                                                  Enter shipments on the
                                           spreadsheet; verify accuracy
                                                                  Web-based system using
                                           of spreadsheet manually; and
                                                                  drop-down boxes. Data are
                                          then write files to backup
                                          media.                  automatically backed up
                                         Monthly:                to remote location.
                                                                Monthly:
                                          Run program that
                                          summarizes daily records  Compare warehouses online
                                          and prints report; get   using the performance
                                                                 dashboard; print only if
                                         report and make evaluations.
                                                                needed.
                          Human time
                                        Daily: 20 minutes
                          requirements
                                        Monthly: 30 minutes     Daily: 10 minutes
                         Computer time                         Monthly: 10 minutes
                                        Daily: 20 minutes
                         requirements
                                        Monthly: 30 minutes    Daily: 10 minutes
                                                               Monthly: 10 minutes
                 Figure 3.4
                 Comparisons of workloads between existing and proposed systems.



                     Figure 3.4 is a comparison of the times required by existing and proposed information sys-
                 tems that are supposed to handle a given workload. Notice that the company is currently using
                 a legacy computer system to prepare a summary of shipments to its distribution warehouses,
                 and a Web-based dashboard is being suggested. The workload comparison looks at when and
                 how each process is done, how much human time is required, and how much computer time is
                 needed. Notice that the newly proposed system should reduce the required human and computer
                 time significantly.


                 Ascertaining Hardware and Software Needs

                 Assessing technical feasibility includes evaluating the ability of computer hardware and soft-
                 ware to handle workloads adequately. Figure 3.5 shows the steps a systems analyst takes in
                 ascertaining hardware and software needs. First, all current computer hardware the organization
                 owns must be inventoried to discover what is on hand and what is usable.
                     A systems analyst needs to work with users to determine what hardware will be needed.
                 Hardware determinations can be made only in conjunction with determining human information
                 requirements. Knowledge of the organizational structure and how users interact with technolo-
                 gies in an organizational setting can also be helpful in hardware decisions. Only when systems
                 analysts, users, and management have a good grasp of what kinds of tasks must be accomplished
                 can hardware options be considered.
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