2217 search results - page 344 / 444 » Rank-aware Query Optimization |
138
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GIS
2007
ACM
15 years 8 months ago
2007
ACM
Spatial join is an important yet costly operation in spatial databases. In order to speed up the execution of a spatial join, the input tables are often indexed based on their spa...
173
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CCS
2008
ACM
15 years 7 months ago
2008
ACM
Hash tables are fundamental data structures that optimally answer membership queries. Suppose a client stores n elements in a hash table that is outsourced at a remote server so t...
147
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DELOS
2000
15 years 6 months ago
2000
User feedback has proven very successful to query large multimedia databases. Due to the nature of the data representation and the mismatch between mathematical models and human p...
151
Voted
VLDB
1998
ACM
15 years 9 months ago
1998
ACM
Approximate predicates can be used to reduce the number of comparisons made by expensive, complex predicates. For example, to check if a point is within a region (expensive predic...
240
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BTW
2009
Springer
15 years 8 months ago
2009
Springer
: The issue of write-read contention is one of the most prevalent problems when deploying real-time data warehouses. With increasing load, updates are increasingly delayed and prev...