基于数据仓库多版本数据更新控制算法的研究

Maintenance of materialized Views in Data Warehouse

作者在分析数据仓库联机维护与下查的3vwq算法的基础上,研究并提出了保证任务一致性的不限制版本数的实视图维护方法及多用户查询和系统维护之间的协调算法。通过使用改进后的算法,使数据仓库的维护性能得到了较大的提高。

The writer introduces the 3vwq algorithm that support on-line mainenance and drill-down query. With its idea of version control and compensating mechanism, I discuss the session consistency and multiv-ersion problem in the condition of multi-user and online query.