Problem Frames: Analysing and Structuring Software Development ProblemsAddison-Wesley, 2001 - 390 pagina's "Understanding and using problem frames will likely become an essential skill of all good software system designers. Jackson's book provides a beautifully crafted pathway into this world." David Garlan, Associate Professor, Computer Science Department, Carnegie Mellon University "In 'Problem Frames' I believe that Michael Jackson has taken the mysticism that surrounds design patterns and constructed a much more accessible technique utilizing a frame metaphor." It is tempting when approaching a software development problem to rush headlong into the trap of thinking too soon about the solution. Software development problems are about the world outside the computer the real environment in which the system must have its effect and demand consideration of the surrounding characteristics, relationships and context. Problem frames are a tool for classifying, analyzing and structuring such software development problems. Whereas object oriented patterns are primarily concerned with solutions, problem frames focus on the problem itself, enabling you to understand and address it clearly and directly. This book is a must-have for all IT professionals facing software development problems on a daily basis. If you are a systems analyst or requirements engineer it will provide an essential, practical guide from the task of identifying the problem to making the descriptions needed to resolve it. It will help you:
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... shared between the connected domains . Each interface is an interface of shared phenomena . For example , the interface between the machine and the nurses ' station consists of shared notify events . The machine can cause a notify event ...
... events are shared by the coin acceptor and the turn- stile controller . Set d consists of two kinds of shared event : Push and Enter . The barrier is constrained by a hydraulic mechanism . To get into the zoo , a visitor first pushes on ...
... Shared phenomena are abstractions Even with this rather vague way of talking about shared phenomena it's clear that shared events and states and values are abstractions , in which a lot of messy detail has been ignored . Whether it's ...
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Problem Frames: Analysing and Structuring Software Development Problems M. A. Jackson Fragmentweergave - 2001 |
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