可行性分析与系统方案书.pptx

1、可行性(feasibility)可行性是一种评量，用来评可行性是一种评量，用来评估信息发展系统将对组织有何利益。估信息发展系统将对组织有何利益。可行性分析(feasibility analysis)是评量可行性是评量可行性的一个过程。的一个过程。可行性的渐进式约束法(creeping commitment)表示可行性应该在整个生命周期中评估。表示可行性应该在整个生命周期中评估。l操作可行性是一个解决方案在组织中运作时，是一个解决方案在组织中运作时，令人满意程度的评量。它同时也是人们对此系令人满意程度的评量。它同时也是人们对此系统统项目感想的评量。项目感想的评量。l技术可行性是一个特定技术解决方

2、案的实用性，是一个特定技术解决方案的实用性，以及技术上的资源与专业知识的可利用性之评以及技术上的资源与专业知识的可利用性之评量。量。l时程可行性是项目的时间表合理程度的评量。是项目的时间表合理程度的评量。l经济可行性是项目或解决方案的成本效益之评是项目或解决方案的成本效益之评量。量。备选系统表(candidate systems matrix)说明备选系统的相似与相异说明备选系统的相似与相异之处；但是，它不提供分析。之处；但是，它不提供分析。CharacteristicsPortion of System ComputerizedBrief description of that portio

3、n of the system that would be computerized in this candidate.BenefitsBrief description of the business benefits that would be realized for this candidate.Servers and WorkstationsA description of the servers and workstations needed to support this candidate.Software Tools NeededSoftware tools needed

4、to design and build the candidate(e.g.,database management system,emulators,operating systems,languages,etc.).Not generally applicable if applications software packages are to be purchased.Candidate 1COTS package Platinum Plus from Entertainment Software Solutions would be purchased and customized t

5、o satisfy Member Services required functionality.This solution can be implemented quickly because its a purchased solution.Technically architecture dictates Pentium III,MS Windows 2000 class servers and workstations(clients).MS Visual C+and MS Access for customization of package to provide report wr

6、iting and integration.Candidate 2Member Services and warehouse operations in relation to order fulfillment.Fully supports user required business processes for SoundStage Inc.Plus more efficient interaction with member accounts.Same as candidate 1.MS Visual Basic 5.0System Architect 2001Internet Expl

7、orerCandidate 3Same as candidate 2.Same as candidate 2.Same as candidate 1.MS Visual Basic 5.0System Architect 2001Internet Explorer(Continued)CharacteristicsApplication SoftwareA description of the software to be purchased,built,accessed,or some combination of these techniques.Method of Data Proces

8、singGenerally some combination of:on-line,batch,deferred batch,remote batch,and real-time.Output Devices and ImplicationsA description of output devices that would be used,special output requirements,(e.g.,network,preprinted forms,etc.),and output considerations(e.g.,timing constratints)Candidate 1P

9、ackage solutionClient/Server(2)HP4MV department laser printers(2)HP5SI LAN laser printersCandidate 2Custom solutionSame as candidate 1.(2)HP4MV department laser printers.(2)HP5SI LAN laser printers(1)PRINTRONIX bar-code printer(includes software&drivers)Web pages must be designed to VGA resolution.A

10、ll internal screens will be designed for SVGA resolution.Candidate 3Same as candidate 2.Same as candidate 1.Same as candidate 2.(Continued)CharacteristicsInput devices and ImplicationsA description of input methods to be used,input devices(e.g.,keyboard,mouse,etc.),special input requirements(e.g.,ne

11、w or revised forms from which data would be input),and input considerations(e.g.,timing of actual inputs).Storage Devices and ImplicationsBrief description of what data would be stored,what data would be accessed from existing stores,what storage media would be used,how much storage capacity would b

12、e needed,and how data would be organized.Candidate 1Keyboard&mouse.MS SQL Server DBMS with 1000GB arrayed capability.Candidate 2Apple“Quick Take”digital camera and software(15)PSC Quickscan laser bar-code scanners(1)HP Scanjet 4C Flatbed ScannerKeyboard and mouseSame as candidate 1.Candidate 3Same a

13、s candidate 2.Same as candidate 1.可行性分析表(feasibility analysis matrix)。用备选系统的分析和评等来补。用备选系统的分析和评等来补充说明备选系统。充说明备选系统。Feasibility CriteriaOperational FeasibilityFunctionality.A description of to what degree the candidate would benefit the organization and how well the system would work.Political.A descri

14、ption of how well received this solution would be from both user management,user,and organization perspective.Technical FeaasibilityTechnology.An assessment of the maturity,availability(or ability to acquire),and desirability of the computer technology needed to support this candidate.Expertise.An a

15、ssessment of the technical expertise needed to develop,operate,and maintain the candidate system.Economic FeasibilityCost to develop:Payback period(discounted):Net present value:Detailed calculations:Schedule FeasibilityAn assessment of how long the solution will take to design and implement.Ranking

16、Candidate 1Only supports Member Services requirements and current business processes would have to be modified to take advantage of software functionality.Score:60Current production release of Platinum Plus package is version 1.0 and has only been on the market for 6 weeks.Maturity of product is a r

17、isk and company charges an additional monthly fee for technical support.Required to hire or train C+expertise to perform modifications for integration requirements.Score:50Approximately$350,000.Approximately 4.5 years.Approximately$210,000.See Attachment A.Score:60Less than 3 months.Score:9560.5Cand

18、idate 2Fully supports user required functionality.Score:100Although current technical staff has only Powerbuilder experience,the senior analysts who saw the MS Visual Basic demonstration and presentation have agreed the transition will be simple and finding experienced VB programmers will be easier

19、than finding Powerbuilder programmers and at a much cheaper cost.MS Visual Basic is a mature technology based on version number.Score:95Approximately$418,040.Approximately 3.5 years.Approximately$306,748.See Attachment A.Score:859-12 months.Score:8092Candidate 3Same as candidate 2.Score:100Although

20、current technical staff is comfortable with Powerbuilder,management is concerned with recent acquisition of Powerbuilder by Sybase Inc.MS SQL Server is a current company standard and competes with SYBASE in the client/server DBMS market.Because of this we have no guarantee future versions of Powerbu

21、ilder will“play well”with out current SQL Server.Score:60Approximately$400.000.Approximately 3.3 years.Approximately$325,500.See Attachment A.Score:909-12 months.Score:8585Wt.30%30%30%10%100%事实格式事实格式 管理格式管理格式I.简介I.简介II方法和程序II结论和建议III事实和细节III事实和细节的讨论与分析IV.事实和细节的摘要与讨论IV.方法和程序V.建议V.最后结论VI.结论VI.事实和细节的附录

22、送交信函封面目录图片、图表和表格目录摘要或执行性摘记(主要元件报告的主体，以事实格式或管理格式撰写主要元件报告的主体，以事实格式或管理格式撰写出现在报告的这一部分出现在报告的这一部分)。附录只有刚强的人，才有神圣的意志，凡是战斗的人，才能取得胜利。22.7.2022.7.20Wednesday,July 20,2022如果惧怕前面跌宕的山岩，生命就永远只能是死水一潭。17:30:2617:30:2617:307/20/2022 5:30:26 PM拼一个春夏秋冬，换一生无怨无悔。22.7.2017:30:2617:30Jul-2220-Jul-22努力学习却不感到满足，教导别人不感到厌倦。17

23、:30:2617:30:2617:30Wednesday,July 20,2022每一发奋努力的背后，必有加倍的赏赐。22.7.2022.7.2017:30:2617:30:26July 20,2022发展和维护他们的家;至于女子呢?则是努力维护家庭的秩序，家庭的安适和家庭的可爱。人背信则名不达。-刘向汉朝经学家。2022年7月20日下午5时30分22.7.2022.7.20过而不改，是谓过矣。论语。2022年7月20日星期三下午5时30分26秒17:30:2622.7.20对于一个大公司而言，没有一支强有力的服务队伍，给用户提供全面周到的服务，那简直是难以想象的。2022年7月下午5时30分

24、22.7.2017:30July 20,2022你对违章讲人情，事故对你不留情。2022年7月20日星期三17时30分26秒17:30:2620 July 2022锲而舍之，朽木不折；锲而不舍，金石可镂。下午5时30分26秒下午5时30分17:30:2622.7.20松驰的琴弦，永远奏不出美妙的乐曲。22.7.2022.7.2017:3017:30:2617:30:26Jul-22一个理发师脸刮得不干净，另一理发师就能找到活干。2022年7月20日星期三17时30分26秒Wednesday,July 20,2022创新就是在生活中发现了古人没有发现的东西。22.7.202022年7月20日星期三17时30分26秒22.7.20谢谢各位！谢谢各位！