| 分布式数据流查询方案及优化 |
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| 引用本文： | 徐署华,胡君. 分布式数据流查询方案及优化[J]. 计算机应用, 2009, 29(7): 1771-1774 |
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| 作者姓名： | 徐署华 胡君 |
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| 作者单位： | 1. 湖南科技职业技术学院2. |
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| 基金项目： | 教育部高职高专计算机类专业教指委科研资助项目 |
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| 摘 要： | 流式数据库系统是一种新型数据库系统，方便于执行连续数据流查询。许多基于流的应用都是分布式的, 由于输入流速率及其他系统参数如可用的计算资源是易变的，所以一个流查询方案必须能适应这些变化。 提出一种分布式流查询方案并进行了优化，使用元组响应时间及系统吞吐量来评价方案的性能。同时，通过实验和其他方案进行比较，证明了方案是最佳的。
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| 关 键 词： | 查询优化 分布式数据流 路由策略, |
| 收稿时间： | 2009-02-16 |
| 修稿时间： | 2009-03-27 |
Query scheme and its optimization for distributed data stream |
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| XU Shu-hua,HU Jun. Query scheme and its optimization for distributed data stream[J]. Journal of Computer Applications, 2009, 29(7): 1771-1774 |
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| Authors: | XU Shu-hua HU Jun |
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| Affiliation: | Software Institute;Hunan Vocational College of Science and Technology;Changsha Hunan 410118;China |
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| Abstract: | Stream database systems are a new type of database system designed to facilitate the execution of queries against continuous streams of data. Many stream-based applications are inherently distributed, Since input stream rates and other system parmeters such as the amount of abailable computing resources can fluctuate significantly, a stream query plan must be able to adapt to these changes. Propose a distributed stream query plan and optimized, use tuple response time and system throughput to evaluate the performance of plan. Compare with other plan by experiments.Proved this plan is optimal. |
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| Keywords: | distributed data stream query plan query optimization routing policy |
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