There is a suggestion to use RDF as base for the datamodel in the new version of Meinds. For details, follow the threads that start with the following messages: * http://www.geocrawler.com/archives/3/14838/2001/8/50/6476658/ * http://www.geocrawler.com/archives/3/14838/2001/8/50/6486095/ For more information about RDF, see: RdfIntro How could we store the RDF data? See: RdfStorage