14248 search results - page 233 / 2850 » Queries |
253
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VLDB
2001
ACM
16 years 5 months ago
2001
ACM
Abstract In this paper we present a mechanism for approximately translating Boolean query constraints across heterogeneous information sources. Achieving the best translation is ch...
231
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VLDB
2007
ACM
16 years 5 months ago
2007
ACM
In large-scale distributed information systems, where participants are autonomous and have special interests for some queries, query allocation is a challenge. Much work in this c...
246
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VLDB
2007
ACM
16 years 5 months ago
2007
ACM
Long running decision support queries can be resource intensive and often lead to resource contention in data warehousing systems. Today, the only real option available to the DBA...
244
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SIGMOD
2009
ACM
16 years 5 months ago
2009
ACM
In order to enable extensibility, modern query optimizers typically leverage a transformation rule based framework. Testing individual rule correctness as well as correctness of r...
252
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SIGMOD
2009
ACM
16 years 5 months ago
2009
ACM
A common criticism of database systems is that they are hard to query for users uncomfortable with a formal query language. To address this problem, form-based interfaces and keyw...