549 search results - page 22 / 110 » Data Expiration and Aggregate Queries |
103
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PODS
1999
ACM
15 years 4 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
116
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DASFAA
2006
IEEE
15 years 5 months ago
2006
IEEE
Database outsourcing is an important emerging trend which involves data owners delegating their data management needs to an external service provider. Since a service provider is a...
127
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WWW
2009
ACM
15 years 6 months ago
2009
ACM
Since more and more business data are represented in XML format, there is a compelling need of supporting analytical operations in XML queries. Particularly, the latest ver
VLDB
2005
ACM
15 years 5 months ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
178
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ICDE
2006
IEEE
16 years 1 months ago
2006
IEEE
Peer-to-peer databases are becoming prevalent on the Internet for distribution and sharing of documents, applications, and other digital media. The problem of answering large scal...