6740 search results - page 7 / 1348 » Querying Databases with Taxonomies |
94
Voted
SIGMOD
1996
ACM
15 years 3 months ago
1996
ACM
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...
140
Voted
ICDE
2012
IEEE
13 years 2 months ago
2012
IEEE
Abstract—Relational database management systems are general in the sense that they can handle arbitrary schemas, queries, and modifications; this generality is implemented using...
109
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COOPIS
2003
IEEE
15 years 5 months ago
2003
IEEE
We consider the problem of query evaluation in Peer-to-Peer (P2P) systems that support semantic-based retrieval services. We confine ourselves to the case where the peers employ t...
DEXAW
2000
IEEE
15 years 4 months ago
2000
IEEE
114
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CIKM
2009
Springer
15 years 6 months ago
2009
Springer
Users frequently modify a previous search query in hope of retrieving better results. These modifications are called query reformulations or query refinements. Existing research h...