A Secure Object-Relationship Model for Multilevel Database Design

The security property which is important in real world data processing has not been much considered in most conceptual data modeling techniques. This paper proposes the Secure Objet-RElationship Model(SOREM) which represents data integrity and security effectively. We present the simple graphical diagrams and fundamental security properties of SOREM. We also present rules that transform the schema of SOREM into a secure relational schema. SOREM can model not only static properties such as object class, attribute and relationship, but also dynamic properties guaranteeing data integrity and security in the conceptual database design step. The SOREM is useful in preventing the inconsistency of data between the schema definitions and the implementation of operations on those data.