Design and implementation of decomposing views system for data warehouse self-maintenance

The data warehouse self-maintenance problem is substantially the problem of making materialized views self-maintainable.Because the exiting policies of materialized views self-maintenance cannot effectually reduce superfluous data in the integration and data sources of data warehouse,the response velocity of data warehouse environment will be tampered.The decomposing views system for data warehouse self-maintenance and improves the present pattern of decomposing views through deriving local views definations of single data source from the global definitions of materialized views.In conclution,the system not only can realize the functions of de-composing and rewriting materialized views,but also can heighten the efficiency of data warehouse self-maintainance.