A server system is capable of receiving requests from a client system for
data within a database system, such as an object relational database
system. In one arrangement, objects are stored in relational tables, with
the objects containing geospatial data. The geospatial data contains one
or more of the following: an image, points, lines, and polygons. The
objects containing the geospatial data are combined by a layer manager
executing in the server system to form a composite image. The composite
image is represented in a file, such as a markup language file, that is
communicated to the client system. In one embodiment, the file is a
Virtual Reality Markup Language file.