2674 search results - page 323 / 535 » Data Models and Query Languages for Spatial Databases |
177
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ICDM
2010
IEEE
15 years 4 months ago
2010
IEEE
Citizen scientists, who are volunteers from the community that participate as field assistants in scientific studies [3], enable research to be performed at much larger spatial and...
151
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ER
2004
Springer
15 years 12 months ago
2004
Springer
In this paper we present a model of functional access to data that, we argue, is suitable for modeling a class of data repositories characterized by functional access, such as web ...
184
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CSREASAM
2006
15 years 8 months ago
2006
- A vast majority of medical information systems use Standard Query Language databases (SQL) as the underlying technology to deliver medical records in a timely and efficient manne...
291
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VLDB
2008
ACM
16 years 6 months ago
2008
ACM
Abstract In this article, we present a comprehensive approach for privacy preserving access control based on the notion of purpose. In our model, purpose information associated wit...
284
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SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...