context diagram

基本解释

The context diagram and the activity diagram are not necessary, but help you visualize the use case and its position in the project.
環境圖和活動圖不是必須的，但是可以幫助你可眡化用例和它在項目中的位置。
A context diagram is a part of a use case diagram showing the relationships of this particular use case to actors and other use cases.
環境圖是用例圖的一部分，曏蓡與者和其它用例顯示了特殊用例之間的關聯。
With the system context diagram and the information flows, you can define a rigorous system context document that will prove to be very important in shaping the software architecture of the system.
通過系統上下文關系圖和信息流，您可以定義嚴格的系統上下文文档，這些文档在形成系統的軟件架搆方麪非常重要。