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Describe about the Environmental model
It indicates environment in which system exists. Any small or big system is a sub-system of a larger system. For illustration, if software is developed for a college, then college would be part of University. If it's developed for University, University will be part of national educational system. Hence, when model of the system is made these external interfaces are defined. These interfaces reflect system's relationship with external universe (known as environment). Environment of a college system is demonstrated in figure below.
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What is the advantage of using prototype software development model instead of waterfall model?
Question: (a) Describe fully the first five basic steps in software cost estimation. (b) What are the main differences between COCOMO1 and COCOMO2 cost estimation models?
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