Vaidya, Prashant D.Shapiro, Linda G.Haralick, Robert M.Minden, Gary J.2013-06-192013-06-191982http://hdl.handle.net/10919/20367Image analysis, at the higher levels, works with extracted regions and line segments and their properties, not with the original raster data. Thus a spatial information system must be able to store points, lines, and areas as well as their properties and interrelationships. In a previous paper (Shapiro and Haralick [22]), we proposed for this purpose an entity-oriented relational database system. In this paper we describe our first experimental spatial information system, which employs these concepts to store and retrieve watershed data for a portion of the state of Virginia. We describe the logical and physical design of the system and discuss the architectural implications.application/pdfenIn CopyrightTechnical reportCS82003-Rhttp://eprints.cs.vt.edu/archive/00000872/01/CS82003-R.pdf