An Extended ORM2 Database Modeling Method

This paper proposes an extended object role modeling method after analyzing the current data based modeling method.It divides large scale information management system into small scale-controlled system according to partition policy.It employs Conceptual Schema Design Procedure (CSDP) to design sub models, which are transformed to logical model or DDL sentences, so as to create database.The practice shows that the database model built by this method can improve development efficiency of information management system.