Concerning information access for portable termi- nals, various method of managing positional information as well as access methods are considered. Which is the optimum of those methods depends on network conditions, such as the speed of movement of the mobile host and the number of access requests to the mobile host. This paper is concerned with data queries in a mobile computing envi- ronment. The performance is evaluated for a system which can select the movement notification method in order to manage the position of the mobile host when the movement of the mobile host is detected, and the query processing method to process the query to the mobile host, from processing alternatives.
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