1. system design phase: Things I concern most at this phase is Authorization sub system Here I take an Java open source project as reference, whose name is POW2ACL And it's a good implementation of RBAC (Role Based Access Control) system Also... , I will study the authorization sub system of my company's product in order to get something useful I believe it's simpler and easier to be used on my DMS.2 system frameset:.. Tomcat (JSP | Servlet) Domino RDB IIOP | CORBA Tech Will Be.