Chapter_14 - Chapter14 QualityConcepts SlideSettoaccompany...

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These slides are designed to accompany Software Engineering: A 1 Chapter 14 Quality Concepts 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.
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These slides are designed to accompany Software Engineering: A 2 Software Quality In 2005,  ComputerWorld  [Hil05] lamented that  “bad software plagues nearly every organization that uses  computers, causing lost work hours during computer downtime,  lost or corrupted data, missed sales opportunities, high IT support  and maintenance costs, and low customer satisfaction.  A year later,  InfoWorld  [Fos06] wrote about the  “the sorry state of software quality” reporting that the quality  problem had not gotten any better. Today, software quality remains an issue, but who is to blame?  Customers blame developers, arguing that sloppy practices lead to  low-quality software.  Developers blame customers (and other stakeholders), arguing  that irrational delivery dates and a continuing stream of changes  force them to deliver software before it has been fully validated.
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These slides are designed to accompany Software Engineering: A 3 Quality The  American Heritage Dictionary  defines  quality  as  “a characteristic or attribute of something.”   For software, two kinds of quality may be  encountered:  Quality of design  encompasses requirements,  specifications, and the design of the system.  Quality of conformance  is an issue focused primarily  on implementation. User satisfaction = compliant product + good quality  + delivery within budget and schedule
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These slides are designed to accompany Software Engineering: A 4 Quality—A Philosophical View Robert Persig [Per74] commented on the thing we call  quality : Quality . . . you know what it is, yet you don't know what it is. But that's self-contradictory. But some things are better than others, that is, they have more quality. But when you try to say what the quality is, apart from the things that have it, it all goes poof! There's nothing to talk about. But if you can't say what Quality is, how do you know what it is, or how do you know that it even exists? If no one knows what it is, then for all practical purposes it doesn't exist at all. But for all practical purposes it really does exist. What else are the grades based on? Why else
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  • Winter '12
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