我们通过下面的简化语法图表来描述触发器语法。

The syntax for triggers is described by the following simplified syntax diagrams.

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在这些语法图表中，您可以从大括号（“{” 和 “}”）中通过管道符号（“|”）分隔的列表中选择一个项目。

In these syntax diagrams, you select one item from the list in braces ("{" and "}") separated by a pipe symbol ("|").

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您应该对各种uml模型元素和图表语法有全面的认识，并且能够有效地在交流和应用程序的形式化规范中使用它们。

You should have complete knowledge of the various UML model elements and diagram syntax and be able to use these effectively for communication and formal specification of the application.

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