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» The DSD Schema Language
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ITICSE
2004
ACM
15 years 3 months ago
SQLator: an online SQL learning workbench
SQL (Structured Query Language) is one of the essential topics in foundation databases courses in higher education. Due to its apparent simple syntax, learning to use the full pow...
Shazia Wasim Sadiq, Maria E. Orlowska, Wasim Sadiq...
DRM
2003
Springer
15 years 3 months ago
Experiences with the enforcement of access rights extracted from ODRL-based digital contracts
In this paper, we present our experiences concerning the enforcement of access rights extracted from ODRL-based digital contracts. We introduce the generalized Contract Schema (Co...
Susanne Guth, Gustaf Neumann, Mark Strembeck
FMCO
2003
Springer
121views Formal Methods» more  FMCO 2003»
15 years 3 months ago
TulaFale: A Security Tool for Web Services
Web services security specifications are typically expressed as a mixture of XML schemas, example messages, and narrative explanations. We propose a new specification language fo...
Karthikeyan Bhargavan, Cédric Fournet, Andr...
PODS
2010
ACM
242views Database» more  PODS 2010»
15 years 3 months ago
Certain answers for XML queries
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
Claire David, Leonid Libkin, Filip Murlak
DLOG
2000
14 years 11 months ago
Knowledge Representation on the Web
Recently, there has been a wide interest in using ontologies on the Web. As a basis for this, RDF Schema (RDFS) provides means to define vocabulary, structure and constraints for ...
Stefan Decker, Dieter Fensel, Frank van Harmelen, ...