I o parallelism is considered to be a promising approach to achievinghigh performance in parallel data warehousing systems where hugeamounts of data and complex analytical queries have to be processed . this paper proposes a parallel secondary data cube storage structure phc for short to efficiently support the processing of range sumqueries and dynamic updates on data cube using parallel computingsystems 区域查询是数据仓库支持多维olap分析的一类重要查询。它在多维数据集合的多维空间中某一指定子空间范围内对度量属性执行聚集操作如sum等。设计有效的多维数据集合的辅助存储结构，有效地支持olap区域查询处理，已经成为数据仓库领域的关键问题之一。
