Enterprise Information Modeling and Model Integration in Carnot Michael N. Huhns, Nigel Jacobs, Tomasz Ksiezyk, Wei-Min Shen, Munindar P. Singh, and Philip E. Cannata Microelectronics and Computer Technology Corporation Information Systems Division 3500 West Balcones Center Drive Austin, TX, U.S.A. 78759-6509 huhns@mcc.com Abstract This paper describes a method for integrating separately developed information models. The models may be the schemas of databases, frame systems of knowledge bases, domain models of business environments, or process models of business operations. The method achieves integration at a semantic level by using an existing global ontology to develop semantic mappings among resources and resolve inconsistencies. Our method is incorporated in a graphical integration tool. The integrated models provide a coherent picture of an enterprise and enable its resources to be accessed and modified coherently.