Supermodel uses a J2EE 2-tier architecture: SQL database back-end, Java Web Application Server front-end.; Back-end Database independent. Requires database with JDBC drivers, recommend PostgreSQL 7.1.2 or Microsoft SQL Server 2000; Front-end Java Web Application Server, Java Servlet 2.3 and JSP 1.2. Currently deployed in Tomcat 4.1.24. Tomcat can be deployed in conjunction with the Apache or Microsoft IIS web servers;