| 异构数据库查询优化算法设计 |
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| 引用本文： | 陈宝,甘雷.异构数据库查询优化算法设计[J].唐山学院学报,2013,26(3):88-90. |
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| 作者姓名： | 陈宝 甘雷 |
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| 作者单位： | 1. 唐山学院计算机中心,河北唐山,063000
2. 唐山学院网络教育中心,河北唐山,063000 |
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| 摘 要： | 传统结构模型对于各个异构数据库之间都建立用户交互模式，系统的易用性低，复杂度高。通过对查询算法分析，建立了统一的公共模式来访问系统，提出基于半连接操作的优化算法。实验结果表明，查询时间与全连接相比减少，系统性能得到提高。
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| 关 键 词： | 异构数据库 半连接 算法 |
The Optimization Algorithm Design of Heterogeneous Database Query |
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| CHENG Bao
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GAN Lei.The Optimization Algorithm Design of Heterogeneous Database Query[J].Journal of Tangshan College,2013,26(3):88-90. |
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| Authors: | CHENG Bao GAN Lei |
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| Institution: | (a. Department of Computer Center; b. Department of Internet and Education Center, Tangshan College, Tangshan 063000 ,China) |
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| Abstract: | The traditional structure model builds user interaction models among heterogeneous da- tabase, and the system usability is low but quite complex. Through the analysis of the query al- gorithm design, the public mode of unified access to the system is established a optimization algorithm based on semi-join operating is put forward. Experimental results show that the query time is reduced compared with full connection and the system performance is improved. |
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| Keywords: | heterogeneous database semi-join algorithm |
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