2674 search results - page 370 / 535 » Data Models and Query Languages for Spatial Databases |
200
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ICDE
2010
IEEE
16 years 3 months ago
2010
IEEE
— In this paper1 we address the problem of processing continuous multi-join queries, over distributed data streams. Our approach makes use of existing work in the field of publi...
150
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ECOOP
1998
Springer
15 years 10 months ago
1998
Springer
Although many temporal extensions of the relational data model have been proposed, there is no comparable amount of work in the context of object-oriented data models. Moreover, ex...
158
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SIGIR
2006
ACM
16 years 13 days ago
2006
ACM
Pseudo-relevance feedback has proven to be an effective strategy for improving retrieval accuracy in all retrieval models. However the performance of existing pseudo feedback meth...
180
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CIDR
2003
15 years 7 months ago
2003
Speculation is an every day phenomenon whereby one acts in anticipation of particular conditions that are likely to hold in the future. Computer science research has seen many suc...
185
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DBSEC
2009
15 years 7 months ago
2009
Reflective Database Access Control (RDBAC) is a model in which a database privilege is expressed as a database query itself, rather than as a static privilege in an access control ...