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This paper has proposed a new method of efficient spatial data transmission in the client-side Web-Based GIS (Geographic Information System) which handles large-size spatial geographic information on the Internet. The basic idea is that, firstly, a largesize map is divided into several parts, where each part is called a “Tile”, according to(More)
Ideally, moving object databases should handle the past, current and future positions of moving objects efficiently. However, existing indexes such as SEB-Tree, SETI-Tree, 2+3R-Tree, 2-3RT-Tree and etc. can only provide the capability for past and current query, and the others such as TPR-Tree, and TPR*-Tree can only provide the capability for current and(More)
We propose moving objects data model and its query language over GML documents. The conventional query languages about GML have been studied with priority given to the integration of geographic information, the support of spatial operations, etc. However, it lacks the support for moving object queries. Therefore, in this paper, we propose the moving objects(More)