365 search results - page 54 / 73 » Answering Non-Monotonic Queries in Relational Data Exchange |
WWW
2003
ACM
15 years 10 months ago
2003
ACM
The integration of data produced and collected across autonomous, heterogeneous web services is an increasingly important and challenging problem. Due to the lack of global identi...
PODS
2008
ACM
15 years 9 months ago
2008
ACM
We revisit the classical chase procedure, studying its properties as well as its applicability to standard database problems. We settle (in the negative) the open problem of decid...
SIGMOD
2002
ACM
15 years 9 months ago
2002
ACM
In this paper, we ask if the traditional relational query acceleration techniques of summary tables and covering indexes have analogs for branching path expression queries over tr...
SDM
2009
SIAM
15 years 6 months ago
2009
SIAM
Query-oriented summarization aims at extracting an informative summary from a document collection for a given query. It is very useful to help users grasp the main information rel...
CAISE
2001
Springer
15 years 2 months ago
2001
Springer
XML is fast becoming the standard for information exchange on the Internet. As such, information expressed in XML will need to be integrated with existing information systems, whi...