值发生变化时，是否存在任何验证或通知规则？

Are there any validation or notification rules when the values are changing?

youdao

一些平台特性包括安全性、事务审计、扩展机制、通知机制、业务规则实施等等。

Some platform features include security, transaction auditing, extension mechanisms, notification mechanisms, business rule enforcement, and so on.

youdao

在这个例子中，活动就是简单地生成某种形式的通知，但也可以在规则活动中执行更复杂的活动(如发传票)。

In this case, the action is simply to generate some form of notice, but you could perform a more complex action (such as the issuance of a citation) as the rule action.

youdao