A transaction is a unit of activity within which multiple operations on data can be made atomic (indivisible), such that exactly all or none of the actions are made permanent.
事务是一个活动单元，其中数据的多个操作可以被原子化(不可分)，精确地说就是所有的活动都是永久的，或者没有一个活动永久的。
A transaction is a unit of activity within which multiple operations on data can be made atomic (indivisible), such that exactly all or none of the actions are made permanent.
事务是一个活动单元，其中数据的多个操作可以被原子化(不可分)，精确地说就是所有的活动都是永久的，或者没有一个活动永久的。
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