86 search results - page 14 / 18 » Using Integrity Constraints to Provide Intensional Answers t... |
PVLDB
2008
13 years 6 months ago
2008
The number of potentially-related data resources available for querying -- databases, data warehouses, virtual integrated schemas -continues to grow rapidly. Perhaps no area has s...
TC
1997
13 years 8 months ago
1997
In this paper we describe a new approach to repairing violations of integrity constraints in databases with null values. By adopting basic concepts from model-based diagnosis, we ...
ECLIPSE
2006
ACM
14 years 1 months ago
2006
ACM
The popularity of XML has motivated the development of novel XML processing tools many of which embed the XPath language for XML querying, transformation, constraint specificatio...
VLDB
2005
ACM
14 years 7 months ago
2005
ACM
Abstract. We propose a mediator model for providing integrated and unified access to multiple taxonomy-based sources. Each source comprises a taxonomy and a database that indexes o...
SEMWEB
2009
Springer
13 years 12 months ago
2009
Springer
Abstract—For many tasks, such as the integration of knowledge bases in the semantic web, one must not only handle the knowledge itself, but also characterizations of this knowled...