July 2001
Intermediate to advanced
656 pages
15h 51m
English
book
Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
by Craig Larman
Content preview from Applying UML and Patterns: An Introduction to Object-Oriented Analysis and Design and the Unified Process, Second Edition
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2.7. The Sequential “Waterfall” Lifecycle
In contrast to the iterative lifecycle of the UP, an old alternative was the sequential, linear, or “waterfall” lifecycle [Royce70]. In common usage, it defined steps similar to the following:
1. | Clarify, record, and commit to a set of complete and frozen requirements. |
2. | Design a system based on these requirements. |
3. | Implement, based on the design. |
A two year study reported in the MIT Sloan Management Review of successful software projects identified four common factors for success; iterative development, rather than a waterfall process, was first on the list [MacCormack01].[5]
[5] The others were: 2) at least daily incorporation of new code into a complete system build, and rapid feedback on design changes ...
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