11523 search results - page 313 / 2305 » Multimedia Database Systems |
186
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SIGMOD
2000
ACM
15 years 11 months ago
2000
ACM
Continuous queries are persistent queries that allow users to receive new results when they become available. While continuous query systems can transform a passive web into an ac...
207
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IDEAS
2003
IEEE
15 years 12 months ago
2003
IEEE
In this concise paper, we present the Nested Relational Sequence Model (NRSM), which is an extension of the Nested Relational Data Model in order to handle XML data. We also intro...
198
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CIKM
1994
Springer
15 years 10 months ago
1994
Springer
This paper argues that most queries in object-oriented databases require traversing from one object to another in the aggregation hierarchy. Thus, the connections between objects ...
293
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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...
137
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PDIS
1994
IEEE
15 years 10 months ago
1994
IEEE
Existing federated database systems (FDBS) provide uniform access to multiple heterogeneous DBS, but do not enable objects to move across the DBS while retaining global identity. ...