610 search results - page 92 / 122 » Efficient Query Evaluation on Probabilistic Databases |
186
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ICDE
2007
IEEE
15 years 11 months ago
2007
IEEE
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...
160
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SIGMOD
2009
ACM
15 years 10 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 ...
165
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VLDB
2002
ACM
15 years 10 months ago
2002
ACM
Multiversion support for XML documents is needed in many critical applications, such as software configuration control, cooperative authoring, web information warehouses, and "...
VLDB
1994
ACM
15 years 1 months ago
1994
ACM
A new type of optimization, called predicate move-around, ia introduced. It is shown how this optimization `considerably improvea the efficiency of evaluating SQL queries that hav...
101
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VLDB
2007
ACM
15 years 3 months ago
2007
ACM
As the Web has evolved into a data-rich repository, with the standard “page view,” current search engines are becoming increasingly inadequate for a wide range of query tasks....