有效用例模式(五)

本文详细介绍了用例设计中的六种模式,包括CompleteSingleGoal、VerbPhraseName、ScenarioPlusFragments、ExhaustiveAlternatives、Adornments和PreciseAndReadable,强调了用例应该具有完整、明确、可读且精确的目标,以帮助开发人员理解系统功能并避免遗漏关键信息。

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第五章 用例

5.1 CompelteSingleGole

不适当的目标,会使编写人员不能确定什么时候一个用例结束,什么时候另一个用例开始。

原因:

太大的用例可能会因细节过多占去涉众的大部分精力;

大的用例限制重用;

过小的用例仅能描述某些价值实现的一部分;

所以:

编写每个用例,用来描述一个完整而且定义良好的目标。

初速目标的特性为:

?        

This book brings together dozens of proven patterns for creating use cases that more accurately reflect real requirements, are easier to translate into working systems, and are simpler to maintain. Utilizing these patterns, architects, analysts, engineers, and managers can leverage decades of hard-earned knowledge to achieve far better results, far more quickly.<br><br>The authors carefully describe how each pattern works, what problems it is intended to solve, and the consequences associated with using it. All patterns are supported with detailed examples and platform-independent class models that demonstrate how they may be realized. All constructs and diagrams reflect the current UML 2.0 standard. This book also includes an insightful use-case primer that will be indispensable both to novices and veteran modelers seeking to become more effective.<br><br>Coverage includes<br><br>Modeling rules that lead to more comprehensible, maintainable, and correct models<br><br>Patterns for structuring, layering, mapping, sequencing, and viewing use cases more effectively<br><br>Blueprints for security, legacy integration, data input/ output, task scheduling, and reporting<br><br>Constructing use cases that separate mandatory elements from optional parts that can be delivered separately<br><br>Incorporating business rules in use-case modeling<br><br>Practical techniques for documenting use cases more effectively<br><br>When to use multiple patterns and blueprints together<br><br>Identifying and avoiding eight common mistakes in use-case modeling: guidance for designers and reviewers<br><br>Examples from a wide range of application domains<br><br>Rely on this book as the world's #1 reference to reusable use-case solutionsand as a catalyst for inspiration in all your use-case modeling projects.<br>
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