5954 search results - page 377 / 1191 » Querying Bi-level Information |
203
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ICDE
2005
IEEE
16 years 14 days ago
2005
IEEE
Processing of top-k queries has been attracting considerable attention. Much of the work assumes distributed data, with each site holding a different set of attributes for the sam...
189
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DAWAK
2003
Springer
16 years 2 days ago
2003
Springer
We introduce a new method for optimization of SQL queries with nested subqueries. The method is based on the idea of Boolean aggregates, aggregates that compute the conjunction or ...
178
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HIM
1997
Springer
15 years 11 months ago
1997
Springer
The application of information retrieval techniques in interactive environments requires systems capable of efficiently processing vague queries. To reach reasonable response tim...
163
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EDBTW
2006
Springer
15 years 10 months ago
2006
Springer
We consider the problem of querying XML documents which are not valid with respect to given DTDs. We propose a framework for measuring the invalidity of XML documents and compactly...
212
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DAMON
2008
Springer
15 years 8 months ago
2008
Springer
Comparisons between the merits of row-wise storage (NSM) and columnar storage (DSM) are typically made with respect to the persistent storage layer of database systems. In this pa...