用例模型(大约20%完成)。
所以，它们是问题性用例模型的标志。
DITA主题图扮演用例模型的角色。
描述一个用例模型的价值。
描述客户期望的用例模型。
一个用例模型就是启动估计过程的完美场。
A use case model is a perfect place to start the estimation process.
图2显示了贷款处理系统最初的用例模型。
Figure 2 shows the original use case model for the loan processing system.
我应如何构建用例模型？
用例模型源自于前景。
它的基础是用例模型，它由角色和用例组成。
At its basis lies the use case model, which consists of actors and use cases.
原则3：使用需求属性决定最好的用例模型。
Principle 3: use requirement attributes to determine the best use case model.
图5：构建用例模型。
从流程和用例模型到服务模型。
我们看一下修改后的样例模型。
Let's have a look at the sample model after the modifications.
用例模型(几乎100%完成)？
图5显示了如何从此菜谱访问和导入用例模型。
Figure 5 shows how to access and import the use case model from the recipe.
记住：你如何重构用例模型将会影响其它的工作。
Remember: How you restructure the use case model will affect the efforts of others.
什么是用例模型？
很多用例与用例模型中的各个用例相关。
Many use cases are related to each other in a use case model.
现在你有一个结构良好并可以理解的业务用例模型。
Now you have a well-structured and understandable business use case model.
另一个例子是用例模型，用于列出参与者。
Another example is a model of use cases, outlining the actors.
业务用例模型，建模“目前的”业务功能。
A business use-case model, modeling the functions of the "as is" business.
用例模型概述是用例建模的一种最终输出物。
The Use Case Model Overview is the final output of the use case modeling.
以我的经验，最好在你的业务用例模型中避免这些联系。
In my experience, it is best to avoid these in your business use case model.
用例模型应该捕获已发现的所有这些利益相关者的交互。
The use case model should capture all these stakeholder interactions as they are discovered.
业务用例模型是说明业务预期功能的模型。
The business use-case model is a model of the business intended functions.
请确保将用例模型导入到之前创建的Retail项目。
Make sure to import the use case model into the Retail project previously created.
如果你的用例模型正在爆炸式增长，你应该挑战你的用例粒度。
If your use case model is exploding, challenge the granularity of your use cases.
针对海关组织机构图，构建海关组织机构用例模型。
描述同一个系统，不同的人会产生不同的用例模型。
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