The modeling of an enterprise, as a collection of collaborating crispies (see Chap. 14), is generally a tough job because the available descriptions of its operation tend to be voluminous and at the same time incomprehensive and consistent. Therefore, it is imperative to develop enterprise ontologies in a systematic way. In this chapter, two things are presented and discussed. The first is the set of
in which the ontological knowledge of (the organization of) an enterprise is expressed, such that this knowledge is easily accessible and manageable. The second is a
for the development of the ontological aspect models of an enterprise. Both build on the existing DEMO methodology. From now on, we will no longer use the terms C-factum, P-statum and P-factum. Instead, we will speak of
, respectively. This seems an acceptable balance between striving for theoretical precision and aspiring practical appreciation of the methodology.