4 Chapter 4. HCN entities and functional components This chapter describes the key entities and functional components in the IBM WebSphere Business Integration for Healthcare Collaborative Network. It includes information about organizations, gateways, users, privacy levels, and health topics. The chapter includes the following sections: HCN entities and functional components overview Organizations Gateways User roles Privacy levels Notifications and e-mails Health topics Chapter summary © Copyright IBM Corp. 2006. All rights reserved. 97