A software system for large dynamic maps based on networked geographical databases

Dynamic maps, often in the form of web-maps, are becoming increasingly popular. This article discusses software architectures and individual components to meet the demands of the most ambitious dynamic maps. We argue that dynamic maps with sensible information over a large scale-range, and with large geographical coverage should be supported by networked geographical databases maintained by different organizations. We also present our experience from building an experimental network of geographical databases to support on-the-fly generation of maps.