... determine the relationship between the classes. In figure 1, the circles are the classes, with the num-ber inside referring to the appropriate table (or sub-table), the arcs are the properties. ... http://www.ksl.stanford.edu/people/dlm/papers/ontologies-come-of-age-mit-press-(with-citation).htm [accessed 6th June 2004]. Schneier, Bruce (2002) interviewed for the Atlantic Monthly by Mann, Charles ... appropriate to make them consistent, and then defines an extensible ontology for network security based on this material. The article provides a framework to locate these taxonomies in the network security...