面向服务（Service-Oriented，SO）的开发方法将（ ）的定义与实现进行解耦，并将跨构件的功能调用暴露出来。该方法有三个主要的抽象级别，最低层的（ ）代表单个逻辑单元的事物，包含特定的结构化接口，并且返回结构化的响应；第二层的服务代表操作的逻辑分组；最高层的（ ）则是为了实现特定业务目标而执行的一组长期运行的动作或者活动。
问题1选项
A.接口
B.功能
C.活动
D.用例
问题2选项
A.类
B.对象
C.操作
D.状态
问题3选项
A.业务规则
B.业务流程
C.数据流
D.控制流
正确答案及解析
正确答案
解析
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