83 search results - page 6 / 17 » Tractable Query Answering over Ontologies with Datalog - |
120
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ICDT
2012
ACM
13 years 1 months ago
2012
ACM
Previous studies of incomplete XML documents have identified three main sources of incompleteness – in structural information, data values, and labeling – and addressed data ...
SSDBM
2002
IEEE
15 years 3 months ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
109
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EON
2007
15 years 4 days ago
2007
We describe an approach to create a synthetic workload for large scale extensional query answering experiments. The workload comprises multiple interrelated domain ontologies, data...
PODS
2000
ACM
15 years 3 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
ERSHOV
2009
Springer
15 years 5 months ago
2009
Springer
Abstract. Data privacy is an important application of ontology modularization. The aim is to publish one module while keeping the information of another module private. We show how...