This book constitutes the refereed proceedings of the 23rd International Conference on Conceptual Modeling, ER 2004, held in Shanghai, China, in November 2004.

On behalf of the Organizing Committee, we would like to welcome you to the proccedings of the 23rd International Conference on Conceptual Modeling (ER 2004). Th

Conceptual modeling has long been recognized as the primary means to enable software development in information systems and data engineering. Conceptual modelin

Conceptual modeling is about describing the semantics of software applications at a high level of abstraction in terms of structure, behavior, and user interact

Conceptual modeling is fundamental to any domain where one must cope with complex real-world situations and systems because it fosters communication - tween tec