It is envisaged that the application of the multilevel security (MLS) scheme will enhance exibility and e ectiveness of authorization policies in shared enterprise databases and w...
The language AML is used to specify the semantics of architecture description languages, ADLs. It is a very primitive language, having declarations for only three constructs: elem...
Electronic commerce is emerging as a major Websupported application. In this paper we argue that database technology can, and should, provide the backbone for a wide range of such...
Serge Abiteboul, Bernd Amann, Sophie Cluet, Anat E...
This paper introduces a formalism to describe the needs and preferences of database users. Because of the precise formulation of these concepts, we have found an automatic and ver...
Even though the large body of knowledge of relational query optimization techniques can be utilized as a starting point for object-oriented query optimization the full exploitatio...