Methods and a system that provide a network of data sources in terms of a traditional database schema, convert traditional database queries into network messages, and route those messages to those data sources which have relevant data, in some instances through designated query nodes. In the present...http://www.google.de/patents/US6961728?utm_source=gb-gplus-sharePatent US6961728 - System and methods for highly distributed wide-area data management of a network of data sources through a database interface
