Affiliations: Department of Information Technology and Production Economics, University of Vaasa, P.O.Box 700, Vaasa, Finland. [email protected] | Department of Information Technology and Production Economics, University of Vaasa, P.O.Box 700, Vaasa, Finland. [email protected]
Note: [] Address for correspondence: Department of Information Technology and Production Economics, University of Vaasa, P.O.Box 700, Vaasa, Finland.
Note: [] Address for correspondence: Department of Information Technology and Production Economics, University of Vaasa, P.O.Box 700, Vaasa, Finland.
Abstract: The paper considers adjacency relation systems introduced by Wanne [10] (1998). The main problems studied are how to characterize the sets of relations, which uniquely define all other adjacency relations, and how one can determine whether a given set of relations satisfies this property. The paper contains the solutions of both questions. One of the goals in introducing the adjacency relation systems has been the development of a theory, which can be used to model databases.
