6740 search results - page 218 / 1348 » Querying Databases with Taxonomies |
142
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CORR
2002
Springer
15 years 6 months ago
2002
Springer
We describe a meta-querying system for databases containing queries in addition to ordinary data. In the context of such databases, a meta-query is a query about queries. Represen...
182
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DBISP2P
2003
Springer
15 years 12 months ago
2003
Springer
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
296
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ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Answering queries using materialized views has been well studied in the context of structured queries and has shown significant performance benefits. Despite the popularity of keyw...
271
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ICDE
1999
IEEE
16 years 8 months ago
1999
IEEE
On the Internet, the limited query-processing capabilities of sources make answering even the simplest queries challenging. In this paper, we present a scheme called GenCompact fo...
175
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ADBIS
2009
Springer
16 years 1 months ago
2009
Springer
Abstract. We consider the problem of query containment for conjunctive queries with the safe negation property. Some necessary conditions for this problem are given. A part of the ...