To improve the execution efficiency of the query processors, the authors exploit heuristics to seek the optimum parallel scheduling execution plan for multi-join expressions.
为了提高查询处理器的执行效率，采用启发式规则来搜索最优的多连接表达式并行调度执行计划。
The multi-join query optimization is the critical problem of parallel query optimization in parallel database system.
多连接查询优化是并行数据库系统的核心问题。
Multi-Join Query Optimization;
多连接查询优化；
Now most of the research work is based on the storage of single relation, and could not support effectively complex multi-join query.
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。
Now most of the research work is based on the storage of single relation, and could not support effectively complex multi-join query.
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。
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