可行性分析與系統(tǒng)建議書

可行性分析與系統(tǒng)提議書

可行性分析與系統(tǒng)建議書第1頁可行性分析可行性

(feasibility)可行性是一個評量，用來評定信息發(fā)展系統(tǒng)將對組織有何利益。可行性分析

(feasibilityanalysis)是評量可行性一個過程。可行性漸進(jìn)式約束法(creepingcommitment)

表示可行性應(yīng)該在整個生命周期中評定。可行性分析與系統(tǒng)建議書第2頁可行性四種測試操作可行性是一個處理方案在組織中運(yùn)作時，令人滿意程度評量。它同時也是人們對此系統(tǒng)∕項(xiàng)目感想評量。技術(shù)可行性是一個特定技術(shù)處理方案實(shí)用性，以及技術(shù)上資源與專業(yè)知識可利用性之評量。時程可行性是項(xiàng)目標(biāo)時間表合理程度評量。經(jīng)濟(jì)可行性是項(xiàng)目或處理方案成本效益之評量?？尚行苑治雠c系統(tǒng)建議書第3頁提議系統(tǒng)方案之成本可行性分析與系統(tǒng)建議書第4頁備選系統(tǒng)表備選系統(tǒng)表(candidatesystemsmatrix)說明備選系統(tǒng)相同與相異之處；不過，它不提供分析?？尚行苑治雠c系統(tǒng)建議書第5頁備選系統(tǒng)表范例CharacteristicsPortionofSystemComputerizedBriefdescriptionofthatportionofthesystemthatwouldbecomputerizedinthiscandidate.BenefitsBriefdescriptionofthebusinessbenefitsthatwouldberealizedforthiscandidate.ServersandWorkstationsAdescriptionoftheserversandworkstationsneededtosupportthiscandidate.SoftwareToolsNeededSoftwaretoolsneededtodesignandbuildthecandidate(e.g.,databasemanagementsystem,emulators,operatingsystems,languages,etc.).Notgenerallyapplicableifapplicationssoftwarepackagesaretobepurchased.Candidate1COTSpackagePlatinumPlusfromEntertainmentSoftwareSolutionswouldbepurchasedandcustomizedtosatisfyMemberServicesrequiredfunctionality.Thissolutioncanbeimplementedquicklybecauseit’sapurchasedsolution.TechnicallyarchitecturedictatesPentiumIII,MSWindowsclassserversandworkstations(clients).MSVisualC++andMSAccessforcustomizationofpackagetoprovidereportwritingandintegration.Candidate2MemberServicesandwarehouseoperationsinrelationtoorderfulfillment.FullysupportsuserrequiredbusinessprocessesforSoundStageInc.Plusmoreefficientinteractionwithmemberaccounts.Sameascandidate1.MSVisualBasic5.0

SystemArchitect

InternetExplorerCandidate3Sameascandidate2.Sameascandidate2.Sameascandidate1.MSVisualBasic5.0SystemArchitectInternetExplorer(Continued)可行性分析與系統(tǒng)建議書第6頁備選系統(tǒng)表范例(續(xù))CharacteristicsApplicationSoftwareAdescriptionofthesoftwaretobepurchased,built,accessed,orsomecombinationofthesetechniques.MethodofDataProcessingGenerallysomecombinationof:on-line,batch,deferredbatch,remotebatch,andreal-time.OutputDevicesandImplicationsAdescriptionofoutputdevicesthatwouldbeused,specialoutputrequirements,(e.g.,network,preprintedforms,etc.),andoutputconsiderations(e.g.,timingconstratints)Candidate1PackagesolutionClient/Server(2)HP4MVdepartmentlaserprinters(2)HP5SILANlaserprintersCandidate2CustomsolutionSameascandidate1.(2)HP4MVdepartmentlaserprinters.(2)HP5SILANlaserprinters(1)PRINTRONIXbar-codeprinter(includessoftware&drivers)WebpagesmustbedesignedtoVGAresolution.AllinternalscreenswillbedesignedforSVGAresolution.Candidate3Sameascandidate2.Sameascandidate1.Sameascandidate2.(Continued)可行性分析與系統(tǒng)建議書第7頁備選系統(tǒng)表范例(續(xù))CharacteristicsInputdevicesandImplicationsAdescriptionofinputmethodstobeused,inputdevices(e.g.,keyboard,mouse,etc.),specialinputrequirements(e.g.,neworrevisedformsfromwhichdatawouldbeinput),andinputconsiderations(e.g.,timingofactualinputs).StorageDevicesandImplicationsBriefdescriptionofwhatdatawouldbestored,whatdatawouldbeaccessedfromexistingstores,whatstoragemediawouldbeused,howmuchstoragecapacitywouldbeneeded,andhowdatawouldbeorganized.Candidate1Keyboard&mouse.MSSQLServerDBMSwith1000GBarrayedcapability.Candidate2Apple“QuickTake”digitalcameraandsoftware(15)PSCQuickscanlaserbar-codescanners(1)HPScanjet4CFlatbedScannerKeyboardandmouseSameascandidate1.Candidate3Sameascandidate2.Sameascandidate1.可行性分析與系統(tǒng)建議書第8頁可行性分析表可行性分析表

(feasibilityanalysismatrix)。用備選系統(tǒng)分析和評等來補(bǔ)充說明備選系統(tǒng)?？尚行苑治雠c系統(tǒng)建議書第9頁可行性分析表范例FeasibilityCriteriaOperationalFeasibilityFunctionality.Adescriptionoftowhatdegreethecandidatewouldbenefittheorganizationandhowwellthesystemwouldwork.Political.Adescriptionofhowwellreceivedthissolutionwouldbefrombothusermanagement,user,andorganizationperspective.TechnicalFeaasibilityTechnology.Anassessmentofthematurity,availability(orabilitytoacquire),anddesirabilityofthecomputertechnologyneededtosupportthiscandidate.Expertise.Anassessmentofthetechnicalexpertiseneededtodevelop,operate,andmaintainthecandidatesystem.EconomicFeasibilityCosttodevelop:Paybackperiod(discounted):Netpresentvalue:Detailedcalculations:ScheduleFeasibilityAnassessmentofhowlongthesolutionwilltaketodesignandimplement.RankingCandidate1OnlysupportsMemberServicesrequirementsandcurrentbusinessprocesseswouldhavetobemodifiedtotakeadvantageofsoftwarefunctionality.Score:60CurrentproductionreleaseofPlatinumPluspackageisversion1.0andhasonlybeenonthemarketfor6weeks.Maturityofproductisariskandcompanychargesanadditionalmonthlyfeefortechnicalsupport.RequiredtohireortrainC++expertisetoperformmodificationsforintegrationrequirements.Score:50Approximately$350,000.Approximately4.5years.Approximately$210,000.SeeAttachmentA.Score:60Lessthan3months.Score:9560.5Candidate2Fullysupportsuserrequiredfunctionality.Score:100AlthoughcurrenttechnicalstaffhasonlyPowerbuilderexperience,thesenioranalystswhosawtheMSVisualBasicdemonstrationandpresentationhaveagreedthetransitionwillbesimpleandfindingexperiencedVBprogrammerswillbeeasierthanfindingPowerbuilderprogrammersandatamuchcheapercost.MSVisualBasicisamaturetechnologybasedonversionnumber.Score:95Approximately$418,040.Approximately3.5years.Approximately$306,748.SeeAttachmentA.Score:859-12months.Score:8092Candidate3Sameascandidate2.Score:100AlthoughcurrenttechnicalstaffiscomfortablewithPowerbuilder,managementisconcernedwithrecentacquisitionofPowerbuilderbySybaseInc