A Data Warehouse System has a more large scale of data, and rather simple process logic than a DBMS. Sothose optimize means of DBMS Query system are not so valid. This paper discusses the optimize policy used in to pa...A Data Warehouse System has a more large scale of data, and rather simple process logic than a DBMS. Sothose optimize means of DBMS Query system are not so valid. This paper discusses the optimize policy used in to par-allel DW system ParaWare, such as query division, public sub query mergence, and fill in the query result. It alsogives out the right algorithm.展开更多
本文针对因不断扩大的数据仓库引起即席查询分析性能问题,提出一种并行数据仓库架构—HDW,并分析了其在 PC 集群中的具体应用,HDW 因其具有的良好的系统扩展性,能够对数千万条元组数据进行同时分析处理,在大规模数据分析及科学计算中具...本文针对因不断扩大的数据仓库引起即席查询分析性能问题,提出一种并行数据仓库架构—HDW,并分析了其在 PC 集群中的具体应用,HDW 因其具有的良好的系统扩展性,能够对数千万条元组数据进行同时分析处理,在大规模数据分析及科学计算中具有重要的应用价值。展开更多
文摘A Data Warehouse System has a more large scale of data, and rather simple process logic than a DBMS. Sothose optimize means of DBMS Query system are not so valid. This paper discusses the optimize policy used in to par-allel DW system ParaWare, such as query division, public sub query mergence, and fill in the query result. It alsogives out the right algorithm.