| 基于混合遗传算法的关系数据库多连接查询优化策略 |
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| 引用本文： | 闫晓慧,董丽丽,张慧娜.基于混合遗传算法的关系数据库多连接查询优化策略[J].微电子学与计算机,2008,25(11). |
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| 作者姓名： | 闫晓慧 董丽丽 张慧娜 |
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| 作者单位： | 西安建筑科技大学,信息与控制工程学院,陕西,西安,710055 |
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| 基金项目： | 陕西省西安市科技攻关项目 |
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| 摘 要： | 改进了基于模拟退火遗传算法的代价评估的计划查询优化策略.其基本思想为:将多连接查询按遗传算法步骤求解,其中选择操作采用最优选择法、交叉和变异操作采用自适应算子,然后对其结果进行退火操作以产生下一代.
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| 关 键 词： | 模拟退火遗传算法 多连接查询 优化 数据库 |
Optimization Strategy of Multi-join Inquiring Relational Database Based on Hybrid Genetic Algorithm |
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| YAN Xiao-hui,DONG Li-li,ZHANG Hui-na.Optimization Strategy of Multi-join Inquiring Relational Database Based on Hybrid Genetic Algorithm[J].Microelectronics & Computer,2008,25(11). |
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| Authors: | YAN Xiao-hui DONG Li-li ZHANG Hui-na |
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| Abstract: | According to characteristics of multi-join inquiry,and advantages and disadvantages of simulated annealing and genetic algorithm,in this paper,it improved to the query optimization strategy based on improved simulated annealing and genetic algorithm.Basic idea: there are many steps of the genetic algorithm to solveing the multi-join inquiry problem,its selection operator is the most the optimal selection strategy,and crossover and mutation operators are adaptive operators,then,the next generation is produced by annealing operation to results of above the steps. |
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| Keywords: | simulated annealing and genetic algorithm multi-join inquiry optimization database |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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