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» Efficient Query Processing on the Relational Quadtree
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SIGMOD
2009
ACM
114views Database» more  SIGMOD 2009»
14 years 8 months ago
A framework for testing query transformation rules
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...
Hicham G. Elmongui, Vivek R. Narasayya, Ravishanka...
CIKM
2008
Springer
13 years 10 months ago
Content-based filtering for efficient online materialized view maintenance
Real-time materialized view maintenance has become increasingly popular, especially in real-time data warehousing and data streaming environments. Upon updates to base relations, ...
Gang Luo, Philip S. Yu
SIGMOD
2001
ACM
136views Database» more  SIGMOD 2001»
14 years 8 months ago
Selectivity Estimation using Probabilistic Models
Estimating the result size of complex queries that involve selection on multiple attributes and the join of several relations is a difficult but fundamental task in database query...
Lise Getoor, Benjamin Taskar, Daphne Koller
SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
14 years 8 months ago
Supporting ranking and clustering as generalized order-by and group-by
The Boolean semantics of SQL queries cannot adequately capture the "fuzzy" preferences and "soft" criteria required in non-traditional data retrieval applicati...
Chengkai Li, Min Wang, Lipyeow Lim, Haixun Wang, K...
DAWAK
2010
Springer
13 years 9 months ago
Experience in Extending Query Engine for Continuous Analytics
: Experience in Extending Query Engine for Continuous Analytics Qiming Chen, Meichun Hsu HP Laboratories HPL-2010-44 In-Database Stream Processing Combining data warehousing and s...
Qiming Chen, Meichun Hsu