Relation representation by tables and by functions

摘要

The paper intends to clarify one aspect in the comparison of relation representation by tables and by networks. This is done by using the point set representation of a relation as a conceptual link between the views to be compared. It is shown, how a tabular representation can be transformed into a functional representation and vice versa. Finally it is indicated, that the real interest in the concepts discussed is for types rather than for single relations.