This diagram shows the technology stack for each architecture tier. The client tier is on Microsoft Windows, with a Web browser and browser native Oracle JVM. The application tier is also on Windows and includes two Oracle Application Servers, one at version AS10gR2, which includes Oracle Forms and has TMS Forms on top, and the other at version AS10gR3, which includes Oracle HTTP Server, Oracle OC4J, and Oracle JVM, which has the TMS Browser and OPA Admin applications on top. In addition, the application tier includes Oracle BI Publisher on Windows with TMS Reports on top. The Database tier can be on either UNIX or Windows with Oracle Database 11g containing both the TMS schema and the OPA schema.