John Zachman introduced a framework for information systems architecture (SA) that has been widely adopted by systems analysts and database designers. It provides a taxonomy for relating the concepts that describe the real world to the concepts that describe an information system and its implementation. The ISA framework has a simple elegance that makes it easy to remember, yet it draws attention to fundamental distinctions that are often overlooked in systems design. This paper presents the framework and its recent extensions and shows how it can be formalized in the notation of conceptual graphs.

p. 590 - Extending and Formalizing the Framework for Information Systems Architecture, 1992