3225 search results - page 307 / 645 » Query Optimization by Stored Queries |
194
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GIS
2010
ACM
15 years 5 months ago
2010
ACM
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...
245
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Motivated by the fact that XML is increasingly being used in distributed applications, we propose building a cooperative caching scheme for XML documents. Our scheme allows sharin...
280
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ICDE
2005
IEEE
16 years 8 months ago
2005
IEEE
Sequence-based XML indexing aims at avoiding expensive join operations in query processing. It transforms structured XML data into sequences so that a structured query can be answ...
179
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VLDB
2004
ACM
16 years 1 days ago
2004
ACM
The use of inaccurate or outdated database statistics by the query optimizer in a relational DBMS often results in a poor choice of query execution plans and hence unacceptably lo...
267
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PODS
2009
ACM
16 years 7 months ago
2009
ACM
The B-tree is a fundamental external index structure that is widely used for answering one-dimensional range reporting queries. Given a set of N keys, a range query can be answere...