Project website

Primary Investigator

Email

Institution

Samet, Hanan

hjs@cs.umd.edu

University of Maryland

Abstract
Issues involved in the browsing of spatial and non-spatial data typical of geographical information systems (GIS) in a distributed DBMS environment are being investigated. We also focus on interaction paradigms that make it unnecessary to resort to conventional query languages such as SQL (although our graphical query paradigm could easily use SQL as an intermediate step). An example of such a paradigm is the discrete Voronoi Diagram which is achieved using a spatial analog of the conventional database semijoin operation. This enables the performance of clustering operations. The implementation of a number of spatial operation as results of particular orderings of browsing steps and using novel browsing units. Extensions to deal with the fact that the Earth is spherical rather are being examined.