2217 search results - page 329 / 444 » Rank-aware Query Optimization |
178
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BNCOD
2007
15 years 6 months ago
2007
Order is essential for XML query processing. Efficient XML processing with order consideration over relational storage is non-trivial, especially for complex nested XQuery expressi...
154
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SIGMOD
2010
ACM
15 years 5 months ago
2010
ACM
Histograms have been widely used for fast estimation of query result sizes in query optimization. In this paper, we propose a new histogram method, called the Skew-Tolerant Histog...
158
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VLDB
1999
ACM
15 years 9 months ago
1999
ACM
An important issue for federated systems of diverse data sources is optimizing cross-source queries, without building knowledge of individual sources into the optimizer. This pape...
144
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GEOINFORMATICA
1998
15 years 4 months ago
1998
Due to the increasing popularity of spatial databases, researchers have focused their efforts on improving the query processing performance of the most expensive spatial database ...
161
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SIGMOD
2010
ACM
15 years 3 months ago
2010
ACM
Tuning tools attempt to configure a database to achieve optimal performance for a given workload. Selecting an optimal set of physical structures is computationally hard since it ...