712 search results - page 38 / 143 » Decoupled Query Optimization for Federated Database Systems |
110
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DASFAA
2007
IEEE
15 years 8 months ago
2007
IEEE
Abstract. To provide complex query processing in peer-to-peer systems has attracted much attention in both academic and industrial community. We present GChord, a scalable techniqu...
187
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SIGMOD
2009
ACM
16 years 2 months ago
2009
ACM
In order to enable extensibility, modern query optimizers typically leverage a transformation rule based framework. Testing individual rule correctness as well as correctness of r...
113
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SSD
2001
Springer
15 years 6 months ago
2001
Springer
In this paper we introduce the notion of constrained nearest neighbor queries (CNN) and propose a series of methods to answer them. This class of queries can be thought of as neare...
114
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DEXAW
1999
IEEE
15 years 6 months ago
1999
IEEE
This paper describes an algebra for use with parallel object databases, and in particular ODMG compliant databases with OQL. Although there have been many proposals for parallel r...
161
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SIGMOD
2011
ACM
14 years 4 months ago
2011
ACM
Table partitioning splits a table into smaller parts that can be accessed, stored, and maintained independent of one another. From their traditional use in improving query perform...