基于机群环境的并行多连接存储分布技术

Data Storage and Distribution Technique of Parallel Multi-join Query in PC Clusters

基于机群系统的数据存储分布是并行数据库领域的一个重要问题。已有的研究工作多集中在基于单个关系的存储分布,不能有效支持复杂多连接查询处理。文章提出了多个关系整体分布方法,给出分布属性选择和处理机分配算法。实验结果表明,算法具有良好的性能,有助于提高并行多连接查询效率。

The data storage and distribution based on PC clusters is one of critical problems in parallel database.Now most of the research work is based on the storage of single relation,and could not support effectively complex multi-join query.An integral distribution method of relations is proposed,which includes the algorithms of selecting distributed attribute and assigning processors,The theoretical analysis and experimental results show that the algorithms have good performance,and conduces to improve the executing speed of parallel multi-join query.