2674 search results - page 295 / 535 » Data Models and Query Languages for Spatial Databases |
227
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...
170
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SIGMOD
2011
ACM
14 years 9 months ago
2011
ACM
We study the problem of context-sensitive ranking for document retrieval, where a context is defined as a sub-collection of documents, and is specified by queries provided by do...
253
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KRDB
2003
15 years 8 months ago
2003
We report about some preliminary issues from the DFG project “Description Logics and Spatial Reasoning” (“DLS”, DFG Grant NE 279/8-1), one of whose goals is to develop a p...
147
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EDBTW
2006
Springer
15 years 10 months ago
2006
Springer
Abstract. We discuss, compare and relate some old and some new models for incomplete and probabilistic databases. We characterize the expressive power of c-tables over infinite dom...
221
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TDP
2010
15 years 1 months ago
2010
In recent years, spatio-temporal and moving objects databases have gained considerable interest, due to the diffusion of mobile devices (e.g., mobile phones, RFID devices and GPS ...