Justifications and Applications of the Set Conceptual Model

In an earlier paper, the SET conceptual model was described. along with the domain graph method of table design. In this paper a justification for the method is provided, and a simple condition shown to be sufficient for the satisfaction of the degree constraints of a set schema. The basis for the consistency of the model is also described. Applications of the SET model to the full range of data processing are suggested, as well as to the problems raised by incomplete information.