Abstract

With new developments in positioning systems and electronics, various researches for moving objects have progressed [3,5,6]. Our paper is related to selection queries considering future positions of moving objects, which are referred to as future queries [5]. An example of the future query is as follows: “which airplanes will be inside a query window 20 minutes from now?” Airplanes correspond to moving objects that move as time passes. Recently, a data model that can deal with the future locations of an object has been proposed [5]. Like various studies [2,4,6], our work is based on this model.

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