3456 search results - page 273 / 692 » Semantics in Spatial Databases |
181
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ICDT
2012
ACM
13 years 9 months ago
2012
ACM
We introduce a new normal form, called essential tuple normal form (ETNF), for relations in a relational database where the constraints are given by functional dependencies and jo...
298
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ICDE
1995
IEEE
16 years 8 months ago
1995
IEEE
We describe a two-level client-side cache for composite objects mapped as views of a relational database. A semantic model, the Structural Model, is used to specify joins on the r...
183
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ICDE
2008
IEEE
16 years 1 months ago
2008
IEEE
— This paper introduces a novel keyword searching paradigm in Relational Databases (DBs), where the result of a search is a ranked set of Object Summaries (OSs). An OS summarizes...
209
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SSDBM
2002
IEEE
15 years 11 months ago
2002
IEEE
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
168
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IDEAS
2000
IEEE
15 years 11 months ago
2000
IEEE
Today many applications routinely generate large quantities of data. The data often takes the form of (time) series, or more generally streams, i.e. an ordered sequence of records...