31. The system recited in claim 1 , wherein the data service layer comprises schema domain managers for providing standardized logic to different application servers.
31. The system recited in claim 1 , wherein the data service layer comprises schema domain managers for providing standardized logic to different application servers. 43. The system recited in claim 31 , wherein the standardized logic includes a renderer primitive manager EJB for creating, removing and updating a RendererPrimitive item.