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SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
An effective query optimizer finds a query plan that exploits the characteristics of the source data. In data integration, little is known in advance about sources' propertie...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Many algorithms have been proposed to approximate holistic aggregates, such as quantiles and heavy hitters, over data streams. However, little work has been done to explore what t...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Peer data management systems (PDMS) offer a flexible architecture for decentralized data sharing. In a PDMS, every peer is associated with a schema that represents the peer's...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
Mobile users today demand ubiquitous access to their data from any mobile device and under variable connection quality. We refer to this requirement as any-time, any-where data ac...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
This paper surveys the area of biological and genomic sources integration, which has recently become a major focus of the data integration research field. The challenges that an i...