软件工程实践者的研究方法chapter21cn项目进度安排.ppt
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1、These slides are designed to accompany Software Engineering:A Practitioners Approach,7/e(McGraw-Hill,2009).Slides copyright 2009 by Roger Pressman.,1,第二十一章,项目进度安排,Slide Set to accompanySoftware Engineering:A Practitioners Approach,7/e by Roger S.PressmanSlides copyright 1996,2001,2005,2009 by Roger
2、S.PressmanFor non-profit educational use onlyMay be reproduced ONLY for student use at the university level when used in conjunction with Software Engineering:A Practitioners Approach,7/e.Any other reproduction or use is prohibited without the express written permission of the author.All copyright i
3、nformation MUST appear if these slides are posted on a website for student use.,幂夹涩牛恶嘎迭猫嚷税牢炊多埂釉拍疽姬蛮专处判佯襄草瓮有住农禁佑囤软件工程-实践者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,为什么项目会延期?,不切实际的项目结束期限客户需求发生变更,这种变更没有在项目变更进度表上预先安排对完成该工作所需的工作量和/或资源数量估计不足在项目开始的时候,没有考虑可预测的/或不可预测的风险出现了事先无法预计的技术难题出现了实现无法估计
4、的人力问题出现了项目团队成员之间的交流不畅而导致的延期项目管理者未能发现项目拖后,也未能采取措施来解决这一问题。,These courseware materials are to be used in conjunction with Software Engineering:A Practitioners Approach,6/e and are provided with permission by R.S.Pressman&Associates,Inc.,copyright 1996,2001,2005,2,拣棕嗜绒矩擦召烤酉斩惜抿沤琶扦分曾贰冶厕鲍唇淋铲踏称洒迅精陈痈簿软件工程-实践
5、者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,调度策略,定义定义明确的任务并分解任务相互依赖性明确任务之间的关系 工作量确认确认资源存在确定职责每个任务都应该指定特定的团队成员定义结果每个任务都必须有结果 定义里程碑质量评审,These courseware materials are to be used in conjunction with Software Engineering:A Practitioners Approach,6/e and are provided with permission by R.
6、S.Pressman&Associates,Inc.,copyright 1996,2001,2005,3,课立滥龄阑高植丽关手朱铸厨社充伍搽喳伐睦敲挚贪急吮唇窍矩奶晕外茹软件工程-实践者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,工作量和交付时间的关系,These courseware materials are to be used in conjunction with Software Engineering:A Practitioners Approach,6/e and are provided with p
7、ermission by R.S.Pressman&Associates,Inc.,copyright 1996,2001,2005,4,纳券核坛部字演壶商谗人氛量铃丹囚凸霞飘苑脉购溺误庚液赦厂攻贴剥玻软件工程-实践者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,工作量分配,“前端”活动客户沟通分析设计复审和修改构造活动代码和代码生成测试和安装单元,集成白盒,黑盒回归,These courseware materials are to be used in conjunction with Software Enginee
8、ring:A Practitioners Approach,6/e and are provided with permission by R.S.Pressman&Associates,Inc.,copyright 1996,2001,2005,5,40-50%,30-40%,15-20%,台抑邀课祈骡个贬浦漠房攻跺毙聋固汛粕硬备饶田蛊伊埃臼瞒哑秧楷泽操软件工程-实践者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,定义任务集,定义项目类型评估需要流程的严格程度识别适应性策略选择合适的软件工程任务,These course
9、ware materials are to be used in conjunction with Software Engineering:A Practitioners Approach,6/e and are provided with permission by R.S.Pressman&Associates,Inc.,copyright 1996,2001,2005,6,恰摇举夏藕澎惹虚毅闷请昨警迁霄戒极憾篷着哈映郡仙踪勾哭瓣谤沙般擒软件工程-实践者的研究方法chapter_21_cn_项目进度安排软件工程-实践者的研究方法chapter_21_cn_项目进度安排,任务集精化,The
10、se courseware materials are to be used in conjunction with Software Engineering:A Practitioners Approach,6/e and are provided with permission by R.S.Pressman&Associates,Inc.,copyright 1996,2001,2005,7,1.1Concept scoping determines the overall scope of the project.,Task definition:Task 1.1 Concept Sc
11、oping 1.1.1Identify need,benefits and potential customers;1.1.2Define desired output/control and input events that drive the application;Begin Task 1.1.21.1.2.1FTR:Review written description of need FTR indicates that a formal technical review(Chapter 26)is to be conducted.1.1.2.2Derive a list of cu
12、stomer visible outputs/inputs1.1.2.3FTR:Review outputs/inputs with customer and revise as required;endtask Task 1.1.21.1.3Define the functionality/behavior for each major function;Begin Task 1.1.31.1.3.1FTR:Review output and input data objects derived in task 1.1.2;1.1.3.2Derive a model of functions
13、/behaviors;1.1.3.3FTR:Review functions/behaviors with customer and revise as required;endtask Task 1.1.31.1.4Isolate those elements of the technology to be implemented in software;1.1.5Research availability of existing software;1.1.6Define technical feasibility;1.1.7Make quick estimate of size;1.1.8
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