9683 search results - page 609 / 1937 » Predicting query performance |
213
Voted
BTW
2007
Springer
16 years 1 months ago
2007
Springer
: Statistics that accurately describe the distribution of data values in the columns of relational tables are essential for effective query optimization in a database management sy...
207
Voted
ICDE
2005
IEEE
16 years 27 days ago
2005
IEEE
Various index structures have been proposed to speed up the evaluation of XML path expressions. However, existing XML path indices suffer from at least one of three limitations: ...
191
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WWW
2001
ACM
16 years 8 months ago
2001
ACM
In response to a query a search engine returns a ranked list of documents. If the query is on a popular topic (i.e., it matches many documents) then the returned list is usually t...
287
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SIGMOD
2007
ACM
16 years 7 months ago
2007
ACM
In-network sensor query processing systems (ISQPs), or sensor databases, have been developed to acquire, process and aggregate data from wireless sensor networks (WSNs). Because W...
258
Voted
SIGMOD
2006
ACM
16 years 7 months ago
2006
ACM
ct In some applications, data capture dominates query processing. For example, monitoring moving objects often requires more insertions and updates than queries. Data gathering usi...