288 search results - page 7 / 58 » Beyond the traditional query operators |
192
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
Incorporating the skyline operator inside the relational engine requires solving the cardinality estimation and the cost estimation problem, hitherto unaddressed. We propose robus...
ICDE
2010
IEEE
15 years 2 months ago
2010
IEEE
— Research on query optimization has traditionally focused on exhaustive enumeration of an exponential number of candidate plans. Alternatively, heuristics for query optimization...
168
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GIS
2005
ACM
15 years 10 months ago
2005
ACM
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...
EDBT
2008
ACM
14 years 11 months ago
2008
ACM
In peer-to-peer data management systems query allocation is a critical issue for the good operation of the system. This task is challenging because participants may prefer to perf...
156
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ICDE
1999
IEEE
15 years 11 months ago
1999
IEEE
Most operations of the relational algebra or SQL require a sorted stream of tuples for efficient processing. Therefore, processing complex relational queries relies on efficient a...