Dynamic Queries over Mobile Objects [chapter]

Iosif Lazaridis, Kriengkrai Porkaew, Sharad Mehrotra
2002 Lecture Notes in Computer Science  
Increasingly applications require the storage and retrieval of spatio-temporal information in a database management system. A type of such information is mobile objects, i.e., objects whose location changes continuously with time. Various techniques have been proposed to address problems of incorporating such objects in databases. In this paper, we introduce new query processing techniques for dynamic queries over mobile objects, i.e., queries that are themselves continuously changing with
more » ... Dynamic queries are natural in situational awareness systems when an observer is navigating through space. All objects visible by the observer must be retrieved and presented to her at very high rates, to ensure a high-quality visualization. We show how our proposed techniques offer a great performance improvement over a traditional approach of multiple instantaneous queries.
doi:10.1007/3-540-45876-x_18 fatcat:flnq5gxhgzekxmrh4tpru5sgne