126 search results - page 10 / 26 » The Complexity of Acyclic Conjunctive Queries |
AAAI
2007
13 years 10 months ago
2007
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large a...
ICDT
2009
ACM
14 years 2 months ago
2009
ACM
Managing inconsistency in databases has long been recognized as an important problem. One of the most promising approaches to coping with inconsistency in databases is the framewo...
PODS
2010
ACM
14 years 18 days ago
2010
ACM
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
RR
2010
Springer
13 years 6 months ago
2010
Springer
Based on practical observations on rule-based inference on RDF data, we study the problem of redundancy elimination on RDF graphs in the presence of rules (in the form of Datalog r...
PVLDB
2010
13 years 6 months ago
2010
Virtual views are a mechanism that facilitates re-use and makes queries easier to express. However the use of iterative view definitions makes very simple query evaluation and an...