What is the difference between the conceptual world and the real world? Is it possible for a conceptual model to represent reality in total? Why or why not?
The real world consists of
(a) Tangible objects of an object type and
(b) Intangible objects of an object type. The conceptual world consists of representations, in the form of entity types, of these real-world tangible and intangible objects. It is not possible for a conceptual model to represent the real world, but only to represent the modeler’s view of the real world (which we call in Chapter 1 the Universe of Interest or portion of reality).