Abstract
Mobile computing is a new emerging computing paradigm posing many challenging data management problems. It refers to the environment where tens of millions of users will use various palmtop and laptop computers, connected by wireless connections to the fixed network. In this paper, we focus on deriving the condition of data replication. The main goal of data replication is to reduce the network traffic generated by massive queries and to speed up the query processing. We try to make it possible to get the needed data from the local agents to process the queries. Further, we present eight query processing strategies, simulate their behaviors according to five query types and other factors of the wireless environment, and discuss the simulation results.