A temporal data model and management system for normative texts in XML format Fabio Grandi, Federica Mandreoli, Paolo Tiberio, and Marco Bergonzini   View Paper (PDF)   Return to XML data modeling and storage Abstract In this paper,we present the results of an on-going research activity concerning the temporal management of normative texts in XML format. In particular, four temporal dimensions (publication,validity,efficacy and transaction times) are used to correctly represent the evolution of norms in time and their resulting versioning. Hence, we introduce a multiversion data model based on XML schema and de?ne basic mechanisms for the management of norm texts. Finally, we describe a prototype management system which has been implemented and evaluated. ©2004 Association for Computing Machinery