对birt脚本的完整指导超出了本文的讨论范围，对您说简单来说，每一个数据集合都有一些事件处理器，它会在数据集合生命周期的特定点上运行。

A complete guide to BIRT scripting is beyond the scope of this article, but in short, each data set can have several event handlers that run at certain points in the data set's life cycle.

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事件存储器从概念上讲比全功能的关系型数据库解决方案要更简单，而且他可以很容易地从内存中的事件集合扩展到全功能的事件存储器。

Event stores are conceptually simpler than full RDBMS solutions, and it's easy to scale up from an in-memory list of events to a full-featured event store.

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