The Online Cooperating View Maintenance Based on Source View Increment

View maintenance is an important field in the research of dataware house. This paper provides an online view self-maintenance method based on source view´s increment to keep the materialized view consistent with the data source. We use the cooperation between the integrator at warehouse and the monitor at data source to maintenance the view, and the method does not require to query back to data source, it can accelerate view maintenance and lessen the burden of communication between dataware house and data sources.