1179 search results - page 23 / 236 » Query Containment for Data Integration Systems |
102
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EDBT
2012
ACM
13 years 1 days ago
2012
ACM
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
BTW
2007
Springer
15 years 3 months ago
2007
Springer
: Over the recent years, very little effort has been made to give XPath a proper algebraic treatment. The only laudable exception is the Natix Algebra (NAL) which defines the tran...
SIGMOD
1998
ACM
15 years 1 months ago
1998
ACM
Most databases contain “name constants” like course numbers, personal names, and place names that correspond to entities in the real world. Previous work in integration of het...
113
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ICDCS
2009
IEEE
15 years 6 months ago
2009
IEEE
We address issues related to privacy protection in location-based services (LBS). Most existing research in this field either requires a trusted third-party (anonymizer) or uses ...
IQ
2007
14 years 11 months ago
2007
: Integrated access to distributed data is an important problem faced in many scientific and commercial applications. A data integration system provides a unified view for users to...