根据use case 的定义,我们可以把它归纳为两个重点: 1. 系统的外部系统(system actor)和外部事物即用户(hummer actor) 2. Use case 表达了系统的功能和所提供的服务,是对系统用户需求(主要 是功能需求)的描述。
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But there is also another aspect of system's design that comes into play as soon as the system Actor is an actual User.
但是当系统活动者是一个真实的用户的时候,还有系统设计的另一个方面开始活动。
Additionally, the same class diagram also describes the relationship between each User Goal identified during the IaD activity and the corresponding System Actor.
此外,同样的类图也描述了在IaD活动中确定的每个用户目标和相应的系统参与者之间的关系。
In the last column in the UML workbook series, we devised a system that would interact with both a human actor (a loan applicant) and an external system actor (a credit bureau).
在UML工作簿系列的前一个专栏中,我们设计了一个既能与参与人(贷款申请人)又能与外部系统参与者(征信所)交互的系统。
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