The More Tier the Merrier

Multi-Tier Architectures

1. Thin Client - display, local processing.
   (Thin Clients and the Network Computer)

2. Middleware - integration, security, transaction processing monitors, directory services, inference engines, workflow, messaging, calendaring, etc.
   (CGI, Perl, IIOP, CORBA, CORBAmed)

3. database(s) - persistent storage.
   Oracle, ObjectStore, Poet.