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CS352-Lecture_Notes-OH-L02

The user view sees quality in terms of an end dr omar

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• The user view sees quality in terms of an end- Dr. Omar Hamdy Spring 2011 7 user’s specific goals. If a product meets those goals, it exhibits quality. • The manufacturer’s view defines quality in terms of the original specification of the product. If the product conforms to the spec, it exhibits quality CS352 Software Engineering II
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Quality—A Pragmatic View • The product view suggests that quality can be tied to inherent characteristics (e.g., functions and features) of a product. inally, the alue sed view easures Dr. Omar Hamdy Spring 2011 8 • Finally, the value-based view measures quality based on how much a customer is willing to pay for a product. In reality, quality encompasses all of these views and more. CS352 Software Engineering II
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Quality of Software • Usually two types: – Quality of design encompasses requirements, specifications, and the design of the system. uality of conformance an issue focused Dr. Omar Hamdy Spring 2011 9 – Quality of conformance is an issue focused primarily on implementation • Why is quality important? Is it the only factor? • User satisfaction = compliant product + good quality + delivery within budget and schedule CS352 Software Engineering II
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Quality of Software • Software quality can be defined as: An effective software process applied in a manner that creates a useful product that provides measurable value for those who produce it and Dr. Omar Hamdy Spring 2011 10 those who use it. • Software engineering practices allow the developer to analyze the problem and design a solid solution—both critical to building high quality software. CS352 Software Engineering II
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Quality Dimensions (David Garvin) Performance Quality. Does the software deliver all content, functions, and features that are specified as part of the requirements model in a way that provides value to the end-user? eature quality. oes the software provide Dr. Omar Hamdy Spring 2011 11 Feature quality. Does the software provide features that surprise and delight first-time end- users? Reliability. Does the software deliver all features and capability without failure? Is it available when it is needed? Does it deliver functionality that is error free? CS352 Software Engineering II
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Quality Dimensions (David Garvin) Conformance. Does the software conform to local and external software standards that are relevant to the application? Does it conform to de facto design and coding conventions? For example, does the user interface conform
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The user view sees quality in terms of an end Dr Omar Hamdy...

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