1430 search results - page 201 / 286 » Query operations for moving objects database systems |
106
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ICDE
2007
IEEE
15 years 7 months ago
2007
IEEE
Ranking of query/search answers, although introduced by early information retrieval systems, has become mandatory for internet searches. When the answers of a query or search are ...
103
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WEBDB
2005
Springer
15 years 7 months ago
2005
Springer
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...
104
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GIS
2010
ACM
15 years 2 days ago
2010
ACM
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...
120
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DEXA
2007
Springer
15 years 7 months ago
2007
Springer
The semantic web is based on ontologies and metadata that indexes resources using ontologies. This indexing is called annotation. Ontology based information retrieval is an operati...
130
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CAISE
1998
Springer
15 years 5 months ago
1998
Springer
We show how model extensibility of object-oriented data management systems can be achieved through the combination of a highlevel core object data model and an architecture designe...