Provided by: Christian-Albrechts-Universitat zu Kiel
Topic: Data Management
Managing movement data efficiently often requires the exploitation of some indexing scheme. Taking into account the kind of queries issued to the given data, several indexing structures have been proposed which focus on spatial, temporal or spatio-temporal data. Since all these approaches consider only raw data of moving objects, they may be well-suited if the queries of interest contain concrete trajectories or spatial regions. However, if the query consists only of a qualitative description of a trajectory, e.g. by stating some properties of the underlying object, sequential scans on the whole trajectory data are necessary to compute the property, even if an indexing structure is available.