Some NIEM practitioners create more formal CMTs that have separate columns indicating the kind of extension, the base types and elements, and the level of semantic alignment.

有些niem从业者创建更为正式的CMT，即具有单独的列指出扩展的种类、基本类型和元素以及语义排列的级别。

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As mentioned in the previous section, if an exception occurs during a method that has been marked as having CMTs, the transaction will automatically be rolled back.

就像前面提到过的，如果在一个被标记为具有CMT的方法执行过程中发生了异常，那么事务将自动回滚。

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Using container-managed transactions (CMTs) provides two key advantages that are nearly impossible to obtain without container support: composable units of work, and robust transactional behavior.

使用容器管理的事务（CMT）提供了两个关键的优势（如果没有容器支持这几乎是不可能的）：可组合的工作单元和健壮的事务行为。

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