Refreshing Distributed Multiple View and Replicas

Abstract

In this paper we prescribe a replication server scheme with an algorithm DRF (Differential Refresh File) to refresh multiple materialized views and replicas in distributed environments. Before sending relevant tuples in server sites to client sites, an effective tuple reduction scheme is developed as a preprocessor to reduce the transmission cost. Because it utilizes differential files without touching base relations, the DRF scheme can help to minimize the number of lucks, which enhances the system's performance.