A method and system for providing an open database model that allows the combining
of spatial and Attribute data in a single relational database. The integration
of spatial and Attribute data allows the data to be accessed by either standard
structured query language (SQL) or a GIS viewing application. The invention provides:
enhanced performance by avoiding proliferation of segmentation; open dynamic segmentation;
integrated temporal data; and automated database maintenance. Permanent anchor
sections are provided to define spatial references. The data model allows for intersections
in the interior of a link (anchor section), resulting in a more stable form of
a link, or anchor section. The use of anchor sections simplifies maintenance of
data associated with the anchor sections and facilitates the use of anchor sections
in a distributed environment. Database views display data in a simple, tabular
format. Access to a continuous archive of historical data is supported.
