3225 search results - page 265 / 645 » Query Optimization by Stored Queries |
197
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PODS
1995
ACM
15 years 9 months ago
1995
ACM
Databases are often incomplete because of the presence of disjunctive information, due to con icts, partial knowledge and other reasons. Queries against such databases often ask q...
175
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CIDR
2009
15 years 7 months ago
2009
Natural language user interfaces to database systems have been studied for several decades now. They have mainly focused on parsing and interpreting natural language queries to ge...
248
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SIGMOD
2005
ACM
16 years 6 months ago
2005
ACM
The problem of estimating progress for long-running queries has recently been introduced. We analyze the characteristics of the progress estimation problem, from the perspective o...
168
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DEXAW
2005
IEEE
15 years 12 months ago
2005
IEEE
Increasing popularity of XML and P2P networks has generated much interest in distributed processing of XML data. We propose a novel solution organized around a mediator capable of...
153
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DEXA
2004
Springer
15 years 11 months ago
2004
Springer
Data integration is a significant challenge: relevant data objects are split across multiple information sources, and often owned by different organizations. The sources represent...