Creator of Knowledge
Information Resources Management Association
Advancing the Concepts & Practices of Information Resources Management in Modern Organizations

Essential, Mandatory, and Shared Parts in Conceptual Data Models

Essential, Mandatory, and Shared Parts in Conceptual Data Models
View Sample PDF
Author(s): Alessandro Artale (Free University of Bozen-Bolzano, Italy) and C. Maria Keet (Free University of Bozen-Bolzano, Italy)
Copyright: 2009
Pages: 36
Source title: Innovations in Information Systems Modeling: Methods and Best Practices
Source Author(s)/Editor(s): Terry Halpin (Neumont University, USA ), John Krogstie (SINTEF, Norway ) and Erik Proper (Radboud University Nijmegen,The Netherlands)
DOI: 10.4018/978-1-60566-278-7.ch002


View Essential, Mandatory, and Shared Parts in Conceptual Data Models on the publisher's website for pricing and purchasing information.


This chapter focuses on formally representing life cycle semantics of part-whole relations in conceptual data models by utilizing the temporal modality. The authors approach this by resorting to the temporal conceptual data modeling language ERVT and extend it with the novel notion of status relations. This enables a precise axiomatization of the constraints for essential parts and wholes compared to mandatory parts and wholes, as well as introduction of temporally suspended part-whole relations. To facilitate usage in the conceptual stage, a set of closed questions and decision diagram are proposed. The longterm objectives are to ascertain which type of shareability and which lifetime aspects are possible for part-whole relations, investigate the formal semantics for sharability, and how to model these kind of differences in conceptual data models.

Related Content

Eduardo Miranda. © 2021. 27 pages.
Mirna Muñoz, Jezreel Mejía, Claude Y. Laporte. © 2021. 24 pages.
Nuno António Santos, Nuno Ferreira, Ricardo J. Machado. © 2021. 27 pages.
Laura C. Rodriguez-Martinez, Hector A. Duran-Limon, Manuel Mora. © 2021. 22 pages.
Ashay Saxena, Shankar Venkatagiri, Rajendra K Bandi. © 2021. 14 pages.
Danilo F. S. Santos, André Felipe A. Rodrigues, Walter O. Guerra Filho, Marcos Fábio Pereira. © 2021. 15 pages.
Danyllo Wagner Albuquerque, Everton Tavares Guimarães, Felipe Barbosa Araújo Ramos, Antonio Alexandre Moura Costa, Alexandre Gomes, Emanuel Dantas, Mirko Perkusich, Hyggo Almeida. © 2021. 21 pages.
Body Bottom