This diagram has already been shown in Figure 13, and represents the System Use Case Model.
此图已经在图13中显示过了，并且表示系统用例模型。
The resulting System Use Case model is shown in Figure 13, and includes all the use cases identified.
结果产生的系统用例模型如图13所示，并且包括已确定的所有用例。
The thesis describes the system function modules in detail using modular structure, then draws the system use case model on this basic.
本系统采用的是模块化结构设计对系统的功能模块进行了详细的描述，在此基础上绘制了系统模块的用例模型。
Moreover the business workers that initiate those methods are to be traced to corresponding system actors (User Roles) living in the system Use Case model.
此外，发起那些方法的业务操作者将追溯到相应的位于系统用例模型中的系统参与者(用户角色)。
12in The Object Advantage (Addison-Wesley, 1995, pg.173), E.A. Jacobsen introduces an algorithm used to map a business use case model onto a system use case model.
12在《The Object Advantage》(addison -Wesley, 1995，第173页)，E.A. Jacobsen介绍了一个算法，用于映射一个业务用例模型到一个系统用例模型。
If, for example, it is decided that the Scheduler worker has to be automated, the sequence diagram shown in Figure 11 provides useful information to create the Scheduler System use Case model.
例如，如果决定必须自动化scheduler操作者，那么图11中所示的序列图提供有用的信息来创建Scheduler系统用例模型。
As you model your use case, you must ensure that every initiation is addressed by some sort of system response.
当建立用例模型的时候，您必须确保每个启动被某种类型的系统响应访问到。
In previous columns, we have established a use case model in which actors represent external entities that interact with our system.
在前面的专栏文章中，我们构建了一个用例模型，参与者在其中表示与系统交互的外部实体。
The completed use case model should allow all the stakeholders to see how the system supports their roles.
完成后的用例模型应该允许所有的利益相关者看见系统是如何支持他们的角色的。
This allows us to evaluate the completeness of the use-case model from a business perspective, as each system use case must support one or more business use cases.
这就允许我们从一种业务观点来评价用例模型的完整性，因为每个系统用例必须支持一个或更多的业务用例。
This system use case can be used to articulate the concepts for the point-to-point transactional model and its variations for the architecture phase of a project.
此系统用例可以用于说明点到点事务模型的概念及其在项目的体系结构设计阶段的变化。
The RUP documentation shows the evolution from business use-case model to business object model and system use-case model; we found this to be quite accurate and helpful.
RUP的文档显示了从业务用例模型到业务对象模型和系统用例模型的演进；我们发现这是非常正确和有帮助的。
This type of model, describing how a user interacts with the system, is usually referred to as a use case model.
模型的类别描述了用户怎样和系统交互，它经常被作为用例被提及。
Use case diagrams are constructs that model the main functions of a system, and identify initial interactions between the system and its environment.
用例图是用来建模系统主要功能的结构，可以识别出最初的系统与它的开发环境之间的交互。
The use case model also includes use case diagrams and activity diagrams that describe how users interact with the system.
用例模型还包括描述用户与系统如何交互的用例图和活动图。
Figure 2 shows the original use case model for the loan processing system.
图2显示了贷款处理系统最初的用例模型。
Early in the project a use case model is made, containing a list of all actors (users or external systems) and use cases in the system, their names, and a brief description.
在项目的早期计划阶段，完成一个用例模型，它包含了所有角色的列表(用户或者外部系统)，以及系统中用例，它们的名字，以及一个简单的介绍。
These use case realizations model how the parts of the system interact within the context of a specific use case.
这些用例实现对系统的一些部分如何在具体用例环境中交互进行建模。
The analysis model identifies the main classes in the system and contains a set of use case realizations that describe how the system will be built.
分析模型确定出系统中的主要类，并且包含一组描述系统如何构建的用例实现。
A use case can either specify a complete system or any model element that describes behavior, for example, a subsystem.
用例可以指定一个完整的系统，也可以指定任何描述行为的模型元素，例如子系统。
The use case model provides detailed information about the behaviors of the system or application that you are developing.
用例模型提供有关您正在开发的系统或应用程序的行为的详细信息。
The use case model should place the system in context, showing the boundaries of the system and the external actors as well as describing the key interactions between the system and the actors.
用例模型应该将系统放到上下文环境中，显示系统和外部参与者之间的边界，并描述系统和参与者之间的关键交互。
Each describes a different aspect of the system, such as the use-case model, the analysis model, and the design model.
每一个都描述了系统的不同方面，例如用例模型，分析模型以及设计模型。
A use case model describes the major interactions between actors (human and other systems) and the system under analysis.
用例模型描述了各种参与者(人和其他系统)和要分析的系统之间的主要交互。
Link the Business Model to the System Model by means of dependencies between the System Use Case Realizations and the Business Use Case Realizations.
利用系统用例实现和业务用例实现间的依赖性将业务模型与系统模型连接起来。
The Piggy Bank sample is divided into three UML models that each describe a different aspect of the system: the use-case model, analysis model, and design model.
PiggyBank范例被分成三个UML模型，每个模型都描述了系统的不同方面：用例模型，分析模型和设计模型。
In use of the analysis model, we can attain particular use case and distribute a group objects for the system behavior.
通过建立分析模型，可以更详细地提炼用例，将系统的行为初步分配给提供行为的一组对象。
But there usually exists a gap which it is difficult to overstep from use case analysis model to other design models in four UML-based models of software system.
然而，通常基于UML的软件系统的四种模型中，从用例分析模型到其它设计模型之间存在一条很难逾越的鸿沟。
Use case model refactoring is a kind of activity to reorganize use case model while preserving the interactions between system and outside entities.
用例模型重构是一种保持模型中系统与外部实体的交互不变而重新组织模型的活动。
But there is a gap which it is difficult to overstep from use case model to other design models in four UML-based models of software system.
然而，通常基于UML的软件系统的四个模型中，从用例分析模型到其它设计模型之间存在一条很难逾越的鸿沟。
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