How to reduce multi-table join, compress the dimension attribute join keywords and effectively aggregate the query data was the key issues for Online Analytical Processing (OLAP) query evaluation.

• 摘要如何减少联机分析处理中多表连接和压缩维属性连接关键字，对查询数据进行有效地分组聚集操作，成为联机分析处理查询处理的关键问题。