Abstract
An Asynchronous Differential Join (ADJ) scheme that can maintain join-materialized views in a distributed environment is introduced. The efficiency of the asynchronous data replication can be enhanced by minimizing data to be sent to relevant sites. It also has an advantage in that the scheme prevents huge base tables from being locked by the remote requests through the utilization of differential files. Experimental results show that the faster the communication speed and the lesser the screening factor, the higher the total cost ratio.
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