当需要执行恢复或回滚操作时，此文档记录应足以用于重新创建各个更新。
This documentation should be sufficient to reproduce the updates should a recovery or rollback action be taken.
UOW是应用程序进程中的一个可恢复的操作序列；它由于提交操作、回滚操作或者结束应用程序进程而结束。
A UOW is a recoverable sequence of operations within an application process; it ends as a result of a commit operation, a rollback operation, or the end of the application process.
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