Constructing a 2-D Database for the World Wide Web

A federated two-dimensional (2-D) database is a database containing 2-D data that are accessible on the World Wide Web (WWW) and that are dynamically linked to other similar databases through active hypertext links over the Internet (1 ,2 ). Federated 2-D databases respect five rules that can be found at URL: http://www.expasy.ch/ch2d/fed-rules.html.