tailieunhanh - Lecture Software engineering - Chapter 27: Project scheduling

The chapter describes the process of building and monitoring schedules for software development projects. To build complex software systems, many engineering tasks need to occur in parallel with one another to complete the project on time. The output from one task often determines when another may begin. It is difficult to ensure that a team is working on the most appropriate tasks without building a detailed schedule and sticking to it. | Chapter 27 Project Scheduling Slide Set to accompany Software Engineering: A Practitioner’s Approach, 7/e by Roger S. Pressman Slides copyright © 1996, 2001, 2005, 2009 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 Practitioner's Approach, 7/e. Any other reproduction or use is prohibited without the express written permission of the author. All copyright information MUST appear if these slides are posted on a website for student use. Why Are Projects Late? an unrealistic deadline established by someone outside the software development group changing customer requirements that are not reflected in schedule changes; an honest underestimate of the amount of effort and/or the number of resources that will be required to do the job; predictable and/or unpredictable risks that were not considered when the project commenced; technical difficulties that could not | Chapter 27 Project Scheduling Slide Set to accompany Software Engineering: A Practitioner’s Approach, 7/e by Roger S. Pressman Slides copyright © 1996, 2001, 2005, 2009 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 Practitioner's Approach, 7/e. Any other reproduction or use is prohibited without the express written permission of the author. All copyright information MUST appear if these slides are posted on a website for student use. Why Are Projects Late? an unrealistic deadline established by someone outside the software development group changing customer requirements that are not reflected in schedule changes; an honest underestimate of the amount of effort and/or the number of resources that will be required to do the job; predictable and/or unpredictable risks that were not considered when the project commenced; technical difficulties that could not have been foreseen in advance; human difficulties that could not have been foreseen in advance; miscommunication among project staff that results in delays; a failure by project management to recognize that the project is falling behind schedule and a lack of action to correct the problem Scheduling Principles compartmentalization—define distinct tasks interdependency—indicate task interrelationship effort validation—be sure resources are available defined responsibilities—people must be assigned defined outcomes—each task must have an output defined milestones—review for quality Effort and Delivery Time Effort Allocation “front end” activities customer communication analysis design review and modification construction activities coding or code generation testing and installation unit, integration white-box, black box regression 40-50% 30-40% 15-20% Defining Task Sets determine type of project assess the degree of rigor required identify adaptation criteria select .

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