712 search results - page 84 / 143 » Decoupled Query Optimization for Federated Database Systems |
140
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IPSN
2007
Springer
15 years 9 months ago
2007
Springer
FlashDB is a self-tuning database optimized for sensor networks using NAND flash storage. In practical systems flash is used in different packages such as on-board flash chips,...
135
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PPAM
2005
Springer
15 years 8 months ago
2005
Springer
Abstract. In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorit...
198
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SIGMOD
2008
ACM
16 years 3 months ago
2008
ACM
As applications within and outside the enterprise encounter increasing volumes of unstructured data, there has been renewed interest in the area of information extraction (IE) ? t...
214
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SIGMOD
2009
ACM
16 years 3 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
133
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BTW
2003
Springer
15 years 8 months ago
2003
Springer
Abstract: In order to achieve efficient execution plans for queries comprising userdefined data types and predicates, the database system has to be provided with appropriate index ...