8763 search results - page 78 / 1753 » Querying Database Knowledge |
133
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BMCBI
2006
14 years 12 months ago
2006
Integration of heterogeneous data types is a challenging problem, especially in biology, where the number of databases and data types increase rapidly. Amongst the problems that o...
SIGMOD
2002
ACM
16 years 17 hour ago
2002
ACM
Time-parameterized queries (TP queries for short) retrieve (i) the actual result at the time that the query is issued, (ii) the validity period of the result given the current mot...
101
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DGO
2003
15 years 1 months ago
2003
The paper introduces a query tool which allows users (either database experts or non-specialist users) to visually formulate and execute spatial queries directed to large federal ...
210
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ICDE
2009
IEEE
16 years 1 months ago
2009
IEEE
Mediator-based data integration systems resolve exploratory queries by joining data elements across sources. In the presence of uncertainties, such multiple expansions can quickly ...
ICDT
2007
ACM
15 years 6 months ago
2007
ACM
Abstract. We define and study formal privacy guarantees for information integration systems, where sources are related to a public schema by mappings given by source-to-target dep...