2546 search results - page 194 / 510 » Managing long-running queries |
193
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CIKM
1994
Springer
15 years 10 months ago
1994
Springer
Accessing information sources to retrieve data requested by a user can be expensive, especially when dealing with distributed information sources. One way to reduce this cost is t...
160
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DEBS
2007
ACM
15 years 10 months ago
2007
ACM
Queries for composite events typically involve the four complementary dimensions of event data, event composition, relationships between events (esp. temporal and causal), and acc...
188
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VLDB
1991
ACM
15 years 10 months ago
1991
ACM
We propose a two-pha.se algorithm for physical database design. In phase one the algorithm, for each logical query, losesrules to determine characteristics of a physical design (s...
173
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CORR
2010
Springer
15 years 6 months ago
2010
Springer
: - In this paper we present several novel efficient techniques and multidimensional data structures which can improve the decision making process in many domains. We consider onli...
190
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SAC
2008
ACM
15 years 6 months ago
2008
ACM
The tree-based languages XQuery and XSLT for XML are widely supported. Many tools do not yet support the new RDF graph query language SPARQL. We propose to embed SPARQL subqueries...