116 search results - page 4 / 24 » Rewriting queries on SPARQL views |
SIGMOD
1999
ACM
13 years 12 months ago
1999
ACM
We address the problem of query rewriting for TSL, a language for querying semistructured data. We develop and present an algorithm that, given a semistructured query q and a set ...
ICDT
2001
ACM
14 years 2 days ago
2001
ACM
Rewriting queries using views is a powerful technique that has applications in query optimization, data integration, data warehousing etc. Query rewriting in relational databases ...
WAIM
2009
Springer
14 years 2 months ago
2009
Springer
Contained rewriting and maximal contained rewriting of tree pattern queries using views have been studied recently for the class of tree patterns involving /, //, and []. Given que...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we consider general path constraints for semistructured databases. Our general constraints do not suffer from the limitations of the path constraints previously stud...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...