数据仓库实化视图的联机维护

数据仓库实化视图的联机维护是数据仓库系统维护的一项关键技术，采用这种技术，能够在不影响用户正常业务的情况下，实现数据仓库中实化视图数据的及时更新。但联机分析处理（OLAP）作为数据仓库的一个主要应用，在数据仓库实化视图的联机维护过程中会产生严重的数据不 一致问题。为了解决这个问题，引入“维护库”（Maintaining Database)的概念，提出基于事务触发的视图维护算法TVM，采取应答机制，达到数据的一致性。

On-line Maintenance in Materialized View in Warehouse

The materialized view's on-line maintenance data warehouse environment is a key technique that keep the refreshment of materialized views being synchronized with that of data sources without disturbing use/s normal use with data warehouse at the same time. As a main application of the date warehouse, OLAP can generate the inconsistency jproblem. The concept of maintaining database and TVM algorithm are presented to solve the consistency problem. TVM uses synchronization and acknowledgement mechanism to ensure the data consistency.