116 search results - page 9 / 24 » Measuring the Complexity of Join Enumeration in Query Optimi... |
PVLDB
2010
14 years 10 months ago
2010
The need to improve a suboptimal execution plan picked by the query optimizer for a repeatedly run SQL query arises routinely. Complex expressions, skewed or correlated data, and ...
163
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SIGMOD
2007
ACM
15 years 11 months ago
2007
ACM
Commercial enterprise data warehouses are typically implemented on parallel databases due to the inherent scalability and performance limitation of a serial architecture. Queries ...
126
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SIGMOD
2003
ACM
15 years 11 months ago
2003
ACM
We consider the problem of approximating sliding window joins over data streams in a data stream processing system with limited resources. In our model, we deal with resource cons...
CORR
2000
Springer
14 years 11 months ago
2000
Springer
The probability distribution P from which the history of our universe is sampled represents a theory of everything or TOE. We assume P is formally describable. Since most (uncount...
GIS
1995
ACM
15 years 3 months ago
1995
ACM
Polygonal objects are characterized by the following well-known parameters: number of vertices, area, perimeter and so on. These parameters describe the data sets that are used in...