乔伊·F·乔治-现代系统分析与设计（第6版）hoffer_msad6e_ch03a.pptVIP

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乔伊·F·乔治-现代系统分析与设计（第6版）hoffer_msad6e_ch03a.ppt

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? 2011 Pearson Education, Inc. Publishing as Prentice Hall Chapter 3 Appendix Object-Oriented Analysis and Design: Project Management Modern Systems Analysisand DesignSixth Edition Jeffrey A. Hoffer Joey F. GeorgeJoseph S. Valacich ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix Learning Objectives Describe the unique characteristics of an OOSAD project. Unique Characteristics of an OOSAD Project Uses a more iterative design approach – such as prototyping or object-oriented analysis and design. During the OOSAD process, the system evolves incrementally over the life of the project. A portion of the final system is constructed during each iteration phase. ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix FIGURE 3-32 During the OOSAD process, the system evolves incrementally over the life of the project Unique Characteristics of an OOSAD Project (Cont.) Define the system as a set of components Object-oriented development projects are developed using ongoing management and evolving system functionality. Complete hard problems first The focus and ordering of system components change over the life of the project. ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix Unique Characteristics of an OOSAD Project (Cont.) Using iterations to manage the project The workflow of an iteration. Don’t plan too much up front Planning estimation improves over time. How many and how long are iterations? An OOSAD project typically has 6 to 9 iterations. ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix Unique Characteristics of an OOSAD Project (Cont.) Project activity focus changes over the life of a project As the project evolves, system functionality evolves. ? 2011 Pearson Education, Inc. Publishing as Prentice Hall * Chapter 3 Appendix ? 2011 Pearson Education, Inc. P