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                #### ACID * **A Atomicity**:原子性 > 指事務是一個不可再分割的工作單元,事務中的操作要么都發生,要么都不發生 * **C Consistency**:一致性 > 指事務開始之前和事務結束以后,數據庫的完整性約束沒有被破壞 * **I Isolation**:隔離性 > 指多個事務并發訪問時,事務之間是隔離的,一個事務不應該影響其它事務運行效果 * **D Durability**:持久性 > 指事務所對數據庫所作的更改便持久的保存在數據庫之中,并不會被回滾
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