在此基础上可以实现二阶段锁协议和树协议。

Two-phase locking protocol and tree locking protocol can be implemented on this system.

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判断一个调度是否可串行化调度的最有效方法是两段锁协议。

The most effective method for deciding if a schedule is serializable is Two-phase locking protocol.

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本文分析了PDM中设计事务的特点，研究了PDM的嵌套事务模型以提高两段锁系统的并发性。

This paper analyzes the property of PDM and a nested transaction model which can improve concurrency of two phase locking mechanism.

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