Abstract. We investigate the computational complexity of reasoning over various fragments of the Extended Entity-Relationship (EER) language, which includes a number of constructs:...
Alessandro Artale, Diego Calvanese, Roman Kontchak...
This paper presents a new architecture of a database management system intended to be used together with existing graphics software. In the first place, a system with this archite...
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
Object-oriented languages come with pre-defined composition mechanisms, such as inheritance, object composition, or delegation, each characterized by a certain set of composition...
Rule bases are common in many business rule applications, clinical decision support programs, and other types of intelligent systems. As the size of the rule bases grows and the in...