586 search results - page 15 / 118 » Answering Multiple-Item Queries in Data Broadcast Systems |
PODS
2010
ACM
15 years 4 months ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
103
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PODS
2000
ACM
15 years 4 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
120
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SIGMOD
2011
ACM
14 years 2 months ago
2011
ACM
An important means of allowing non-expert end-users to pose ad hoc queries — whether over single databases or data integration systems — is through keyword search. Given a set...
179
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ICDE
2004
IEEE
16 years 1 months ago
2004
IEEE
We examine the problem of evaluating selection queries over imprecisely represented objects. Such objects are used either because they are much smaller in size than the precise on...
100
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EDBT
2009
ACM
15 years 2 months ago
2009
ACM
With the amount of data in current data warehouse databases growing steadily, random sampling is continuously gaining in importance. In particular, interactive analyses of large d...