3225 search results - page 179 / 645 » Query Optimization by Stored Queries |
158
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BTW
2003
Springer
15 years 8 months ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
110
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DEXAW
2010
IEEE
15 years 4 months ago
2010
IEEE
Given a set of keywords, we find a maximum Web query (containing the most keywords possible) that respects userdefined bounds on the number of returned hits. We assume a real-world...
180
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DLOG
2011
14 years 6 months ago
2011
W3C currently extends the SPARQL query language with so-called entailment regimes, which define how queries are evaluated using logical entailment relations. We describe a sound a...
122
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PODS
2005
ACM
16 years 3 months ago
2005
ACM
All known algorithms for evaluating advanced XPath queries (e.g., ones with predicates or with closure axes) on XML streams employ buffers to temporarily store fragments of the do...
124
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SSD
2007
Springer
15 years 9 months ago
2007
Springer
In many modern applications such as biometric identification systems, sensor networks, medical imaging, geology, and multimedia databases, the data objects are not described exact...