3471 search results - page 550 / 695 » Data Stream Query Processing |
172
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SIGMOD
2009
ACM
15 years 12 months ago
2009
ACM
SQL tuning--the attempt to improve a poorly-performing execution plan produced by the database query optimizer-is a critical aspect of database performance tuning. Ironically, as ...
EDBT
2008
ACM
15 years 11 months ago
2008
ACM
Modern enterprise data warehouses have complex workloads that are notoriously difficult to manage. An important problem in workload management is to run these complex workloads `o...
106
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DPD
1998
14 years 11 months ago
1998
A warehouse is a data repository containing integrated information for e cient querying and analysis. Maintaining the consistencyof warehouse data is challenging, especially if the...
KDD
1998
ACM
15 years 3 months ago
1998
ACM
For a wide variety of classification algorithms, scalability to large databases can be achieved by observing that most algorithms are driven by a set of sufficient statistics that...
154
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VLDB
2007
ACM
15 years 12 months ago
2007
ACM
This paper presents two extensions for XQuery. The first extension allows the definition and processing of different kinds of windows over an input sequence; i.e., tumbling, slidi...