8259 search results - page 669 / 1652 » Self-Tuning Database Systems |
280
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ICDE
1997
IEEE
16 years 8 months ago
1997
IEEE
Query optimization is an integral part of relational database management systems. One important task in query optimization is selectivity estimation, that is, given a query P, we ...
283
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GIS
2004
ACM
16 years 8 months ago
2004
ACM
In the geometric data model [6], spatio-temporal data are modelled as a finite collection of triangles that are transformed by time-dependent affinities. To facilitate querying an...
306
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GIS
2005
ACM
16 years 8 months ago
2005
ACM
Topological predicates, as derived from the 9-intersection model, have been widely recognized in GIS, spatial database systems, and many other geo-related disciplines. They are ba...
195
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WWW
2004
ACM
16 years 7 months ago
2004
ACM
Search results generated by searchable databases are served dynamically and far larger than the static documents on the Web. These results pages have been referred to as the Deep ...
289
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SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
In this paper, we consider the problem of keyword query cleaning for structured databases from a probabilistic approach. Keyword query cleaning consists of rewriting the user quer...