70 search results - page 6 / 14 » Semistructured data schemas with expressive constraints |
ICDE
2002
IEEE
14 years 9 months ago
2002
IEEE
XML and other semi-structured data may have partially specified or missing schema information, motivating the use of a structural summary which can be automatically computed from ...
IJCAI
2003
13 years 9 months ago
2003
In this paper we address the problem of query answering and rewriting in global-as-view data integration systems, when key and inclusion dependencies are expressed on the global i...
DLOG
2008
13 years 10 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
BTW
2007
Springer
13 years 11 months ago
2007
Springer
: Schema mapping techniques for data exchange have become popular and useful tools both in research and industry. A schema mapping relates a source schema with a target schema via ...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
XML and semi-structured data are now de-facto standards for data exchange, and it is often the case that published or exchanged XML documents have specic restrictions on how they ...