574 search results - page 35 / 115 » Distributed Queries and Query Optimization in Schema-Based P... |
146
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COMGEO
2008
ACM
15 years 2 months ago
2008
ACM
Given a planar polygonal subdivision S, the point location problem is to preprocess S into a data structure so that the cell of the subdivision that contains a given query point c...
120
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ADBIS
2004
Springer
15 years 7 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
223
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ICDE
2007
IEEE
16 years 3 months ago
2007
IEEE
Skyline query processing has received considerable attention in the recent past. Mainly, the skyline query is used to find a set of non dominated data points in a multidimensional...
102
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DEXA
2004
Springer
15 years 7 months ago
2004
Springer
Data integration is a significant challenge: relevant data objects are split across multiple information sources, and often owned by different organizations. The sources represent...
130
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VLDB
1989
ACM
15 years 6 months ago
1989
ACM
This paper presents a parallel algorithm for recursive query processing and shows how it can be efficiently implemented in a local computer network. The algorithm relies on an int...