| 新的实时乐观并发控制协议的研究 |
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| 引用本文： | 方来华,吴爱国. 新的实时乐观并发控制协议的研究[J]. 计算机工程与应用, 2004, 40(31): 166-168 |
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| 作者姓名： | 方来华 吴爱国 |
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| 作者单位： | 天津大学电气与自动化学院,天津,300072;天津大学电气与自动化学院,天津,300072 |
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| 摘 要： | 提出了一种新的基于事务重要性的实时乐观并发控制协议。其基本思想是当系统中事务属不同类时,有一些事务的重要性要大于其它事务,在冲突消解中利用关于事务重要性的信息来减少重要性大的事务被延误的数量,提高并发控制机制性能。通过模拟试验分析该协议,表明其能有效地减少重要性大事务的失效率,但对总体事务的失效率影响不大。
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| 关 键 词： | 实时数据库 重要性 事务 并发控制 |
| 文章编号： | 1002-8331-(2004)31-0166-03 |
A Study on New Real-time Optimistic Concurrency Control Protocol |
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| Fang Laihua Wu Aiguo. A Study on New Real-time Optimistic Concurrency Control Protocol[J]. Computer Engineering and Applications, 2004, 40(31): 166-168 |
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| Authors: | Fang Laihua Wu Aiguo |
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| Abstract: | A new real-time optimistic concurrency control protocol is proposed,which uses importance of transactions.The basic idea of the new protocol is when transactions in system are heterogeneous,some are of greater importance than others,using the information about the importance of the transactions in the conflict resolution to reduce the number of transactions with greater importance,and thus enhance the performance of concurrency control.Experiment results show that the new protocol can effectively reduce miss -ratio of transaction with greater importance while influencing the overall miss-ratio slightly. |
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| Keywords: | real-time database importance transaction concurrency control |
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