Abstract. Database applications are frequently faced with the necessity of representing time varying information and, particularly in the management of information systems, a few k...
Several relational approaches have been proposed to detect the changes to XML documents by using relational databases. These approaches store the XML documents in the relational d...
In this paper, we show that representation and reasoning techniques used in traditional knowledge engineering and the emerging Semantic Web can play an important role for heteroge...
A fundamental requirement for cooperating agents is to agree on a selection of component values of objects that can be used for reliably communicating references to the objects, to...
This paper is concerned with a transformation-based approach to update propagation in an extended version of Codd’s relational algebra which allows for defining derived relatio...