《软件工程-实践者的研究方法》chapter_21_cn_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 accompany Software Engineering: A Practitioners Approach, 7/e by Roger S. Pressman Slides copyright 1996, 2001, 2005, 2
2、009 by Roger S. Pressman For non-profit educational use only May 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 aut
3、hor. All copyright information 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
4、 出现了事先无法预计的技术难题 出现了实现无法估计的人力问题 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
5、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
6、/e and are provided with permission by R.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 P
7、ractitioners Approach, 6/e and are provided with permission 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 cou
8、rseware 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, 2005,5,40-50%,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
9、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 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, 2005,6,恰摇举夏藕澎惹虚毅闷请昨警迁霄戒极憾
10、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,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, 2005,7,
11、1.1 Concept scoping determines the overall scope of the project.,Task definition: Task 1.1 Concept Scoping 1.1.1 Identify need, benefits and potential customers; 1.1.2 Define desired output/control and input events that drive the application; Begin Task 1.1.2 1.1.2.1 FTR: Review written description
12、of need FTR indicates that a formal technical review (Chapter 26) is to be conducted. 1.1.2.2 Derive a list of customer visible outputs/inputs 1.1.2.3 FTR: Review outputs/inputs with customer and revise as required; endtask Task 1.1.2 1.1.3 Define the functionality/behavior for each major function;
13、Begin Task 1.1.3 1.1.3.1 FTR: Review output and input data objects derived in task 1.1.2; 1.1.3.2 Derive a model of functions/behaviors; 1.1.3.3 FTR: Review functions/behaviors with customer and revise as required; endtask Task 1.1.3 1.1.4 Isolate those elements of the technology to be implemented i
14、n software; 1.1.5 Research availability of existing software; 1.1.6 Define technical feasibility; 1.1.7 Make quick estimate of size; 1.1.8 Create a Scope Definition; endTask definition: Task 1.1,is refined to,疹眯地梗泰顿噪趴堪朝尸洁次肛鸽坑栏涸坪磺赖媒们业谰旭壬猪庙肋拒续软件工程-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
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