1179 search results - page 12 / 236 » Query Containment for Data Integration Systems |
IJCAI
2003
14 years 11 months ago
2003
In data-integration systems, information sources often have various constraints such as “all houses stored at a source have a unique address.” These constraints are very usefu...
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SIGMOD
2008
ACM
15 years 9 months ago
2008
ACM
Many scientific, financial, data mining and sensor network applications need to work with continuous, rather than discrete data e.g., temperature as a function of location, or sto...
KRMED
2004
14 years 11 months ago
2004
To fix the semantics of different kinds of parthood relations we require axioms which go beyond those characterizing partial orderings. I formulate such axioms and show their impl...
70
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ENTCS
2006
14 years 9 months ago
2006
Data integration systems provide a uniform query interface (UQI) to multiple, autonomous data sources [4]. This paper presents the universal data model (UDM) that captures the sem...