218 Dietz and Halpin Copyright © 2004, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. Chapter XI Using DEMO and ORM in Concert: A Case Study Jan L.G. Dietz, Delft University of Technology, The Netherlands Terry Halpin, Northface University, USA ABSTRACT The Demo Engineering Methodology for Organizations (DEMO) enables business processes of or- ganizations to be modeled at a conceptual level, independent of how the processes are implemented. DEMO focuses on the communication acts that take place between human actors in the organization. The Object-Role Modeling (ORM) approach enables business information to be modeled conceptually, in terms of fact types as well as the business rules that constrain how the fact types may be populated for any given state of the information system and how derived facts may be inferred from other facts. ORM also includes procedures to map conceptual data models to physical database schemas. Both DEMO and ORM treat fact types as fundamental, and require that their models be expressible in natural language sentences. This suggests that the approaches may be synthesized in a natural way, resulting in a more powerful method for business modeling. This chapter discusses an exploratory case study in which both methods were used in concert, and identifies some lessons learned. INTRODUCTION Demo Engineering Methodology for Organizations (DEMO) is a method for orga- nization engineering, an emerging discipline concerning the design and implementation of organizations (Dietz, 1994, 1999, 2003a, 2003b; Van Reijswoud, Mulder & Dietz, 1999). Traditional organization science is based on a teleological system definition, which is con- cerned with the function and the behavior of a system in its environment. The corresponding dominant paradigm for studying organizations is the IPO-paradigm (Input-Process-Output). The matching model type is the black-box-model. Organization engineering is based on an ontological system definition, which is concerned with the construction and operation of a 701 E. Chocolate Avenue, Suite 200, Hershey PA 17033-1240, USA Tel: 717/533-8845; Fax 717/533-8661; URL-http://www.idea-group.com ITB10027 IDEA GROUP PUBLISHING This chapter appears in the book, Advanced Topics in Database Research, Volume 3, edited by Keng Siau. Copyright © 2004, Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited.