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。
把追踪应用到样例模型中。
用例模型概述，角色概述，以及内容图表
Use Case Model Overview, Actors Overview, and Context diagrams
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.
图5：构建用例模型。
从流程和用例模型到服务模型。
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.
创建用例模型的要点是减小错误构建系统的风险。
The point of creating use case models is to mitigate the risk of building the wrong system.
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.
这不意味着用例模型只能够包含来自于前景的元素。
This doesn't mean that the Use-Case Model can only contain elements from the Vision.
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.
图6A.架构师活动：用例模型优化。
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.
定义业务用例、建立到需求的跟踪关系(用例模型)。
Define the business use cases and establish traceability relationships to the requirements (use-case models).
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.
此图已经在图13中显示过了，并且表示系统用例模型。
This diagram has already been shown in Figure 13, and represents the System Use Case Model.
应用推荐