两个表或源之间的标识符引用是否完整？

Is the reference of an identifier between two tables or sources intact?

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事件标识符与事件源一起唯一标识事件。

Event identifiers, together with the event source, uniquely identify an event.

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事件标识符与事件源一起唯一标识事件。

Event identifiers, together with the event source, uniquely identify an event.

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