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» Query Brokers for Distributed and Flexible Query Evaluation
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KRDB
1996
123views Database» more  KRDB 1996»
14 years 10 months ago
Flexible Query-Answering Systems Modelled in Metalogic Programming
Metaprogramming adds new expressive power to logic programming which can be advantageous to transfer to the field of deductive databases. We propose metaprogramming as a way to mo...
Troels Andreasen, Henning Christiansen
VLDB
2001
ACM
102views Database» more  VLDB 2001»
15 years 1 months ago
Form-Based Proxy Caching for Database-Backed Web Sites
We explore a new proxy-caching framework that exploits the query semantics of HTML forms. We identify a common class of form-based queries, and study two representative caching sc...
Qiong Luo, Jeffrey F. Naughton
CCS
2008
ACM
14 years 11 months ago
Assessing query privileges via safe and efficient permission composition
We propose an approach for the selective enforcement of access control restrictions in, possibly distributed, large data collections based on two basic concepts: i) flexible autho...
Sabrina De Capitani di Vimercati, Sara Foresti, Su...
SEMWEB
2010
Springer
14 years 7 months ago
Combining Approximation and Relaxation in Semantic Web Path Queries
We develop query relaxation techniques for regular path queries and combine them with query approximation in order to support flexible querying of RDF data when the user lacks know...
Alexandra Poulovassilis, Peter T. Wood
TGC
2007
Springer
15 years 3 months ago
Logical Networks: Towards Foundations for Programmable Overlay Networks and Overlay Computing Systems
Abstract. We propose and discuss foundations for programmable overlay networks and overlay computing systems. Such overlays are built over a large number of distributed computation...
Luigi Liquori, Michel Cosnard