Prof. Peter Chen received his Ph.D. from Harvard University and has held regular and visiting faculty appointments at MIT, UCLA and Harvard. He is the originator of the Entity-Relationship Model (ER Model), which serves as the foundation of many systems analysis and design methodologies, computer-aided software engineering (CASE) tools, and repository systems including IBM’s Repository Manager/MVS and DEC’s CDD/Plus. After years of efforts of many people in developing and implementing the entity and relationship concepts, now “Entity-Relationship Model (ER Model),” ”Entity-Relationship Diagram (ER Diagram),” and “Peter Chen” have become commonly used terms in “online” dictionaries, books, articles, web pages, course syllabi, and commercial product brochures. Dr. Chen is a Fellow of the IEEE, the ACM, and the AAAS. He is a member of the European Academy of Sciences. He has been listed in Who’s Who in America and Who’s Who in the World for approximately 18 years.