3225 search results - page 352 / 645 » Query Optimization by Stored Queries |
277
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
Databases are increasingly being used to store information covered by heterogeneous policies, which require support for access control with great flexibility. This has led to incr...
247
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VLDB
2007
ACM
16 years 6 months ago
2007
ACM
This paper analyzes the performance of concurrent (index) scan operations in both record (NSM/PAX) and column (DSM) disk storage models and shows that existing scheduling policies...
185
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
Sharing huge, massively distributed databases in P2P systems is inherently difficult. As the amount of stored data increases, data localization techniques become no longer suffici...
146
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ICDCS
2008
IEEE
16 years 1 months ago
2008
IEEE
Declustering techniques reduce query response times through parallel I/O by distributing data among multiple devices. Recently, replication based approaches were proposed to furth...
159
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SSDBM
2007
IEEE
16 years 27 days ago
2007
IEEE
Space-partitioning trees, like the disk-based trie, quadtree, kd-tree and their variants, are a family of access methods that index multi-dimensional objects. In the case of index...