3专业导引-需求分析.ppt

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1、本科【软件工程】专业2011.92011.9专业导引-需求分析2011-092自我介绍王春秀计算机系软件外包教研室计算机系软件外包教研室Email:Email:Office:C7-2Office:C7-2楼楼Tel:82878113Tel:82878113QQ:2316743459QQ:思考：例：东软网络教学平台东软网络教学平台学生成绩管理系统学生成绩管理系统学生成绩管理系统需求：能够管理学生的各学期、各门课程的成绩能够对某个班级某门课程的成绩进行排序能够对某个班级某门课程的成绩进行统计，统计出最高分、最低分、平均分东软网络教学平台的需求有哪些？东软网络教学平台的需求有哪些？思考：当开发一个复

2、杂的、大型软件系统时会遇到哪些问题？项目需求变化项目人员变动。It is not Software EngineeringWhen you develop a large and complex software system,you may encounter many problems,such as,how to:estimate costdivide the project into managable piecesensure the pieces produced and compatibleconnunicate between piecesmeasure progressdea

3、l with the Are there any well-established techniques can be referrenced or used,like engineering technique?Maybe.software engineering is differente from other fields of engineering.Is there a solution?Other fields of engineeringSoftware engineeringConstructed from generic and prefabricated component

4、sUsually domain-specific,thus used as generic components are limitedLack of quantitative techniques and applicable quality measurement-Research in software engineeringResearchers-practitionerswork towards developing techniques for immediate applicationTheoreticianssearch for underlying principles an

5、d theories on which more stable techniques can someday be constructed.The need for progress by both is Existing problems with swReliabilty problem may cause disasters.Rising moon being interpreted as a nuclear attackA one-day loss of$5million by the Bank of New YorkThe loss of space probesRadiation

6、What is software engineeringsoftware engineering is an engineering discipline which is concernsed with all the aspects of software Progress has made-CASECASE:CComputer-A Aided S Software E Engineeringproject planning systemsproject management systemdocumentation toolsprototyping and simulation tools

7、programming 软件项目的开发可划分为哪些阶段？每个阶段的主要任务是什么？Software Life-Cycle Phases1.Requirement phaseThe concept is explored and refined,and then the clients requirements are elicited.2.Specification(analysis)phaseThe clients requirement are analyzed,and presented in the form of the specification document.“What th

8、e product is supposed to do.”At the end of the phase,the software project management plan is drawn up,describing the proposed of software development in full 3.Design phaseDesign documentsHow the product does?4.Implementation&Integration phaseThe various components are coded and tested.The component

9、s of the product are combined and tested as a 课后任务1整理出网络教学平台软件系统的需求可根据东软网络教学平台整理，也可通过网络，借鉴别的网络教学平台的需求进一步思考（下节课检查）软件开发的过程模型有哪些？你们准备采用哪种？为什么？软件系统的架构有哪几种？你们准备采用哪种？为什么？你们的子系统如何划分？每个子系统的功能是什么？系统设计是应遵循哪些原则？这些原则的含义能说出来多少？请借助工具设计出你们系统的主要界面进一步思考（下节课检查）每个功能的处理流程是怎么样的？最好能图形表示每个功能设计到哪些数据？如何设计出高质量的、以维护的软件系统？在软件系统的设计阶段有哪些先进的技术可以借鉴？2011-0919