2674 search results - page 135 / 535 » Data Models and Query Languages for Spatial Databases |
146
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SAC
2010
ACM
15 years 12 months ago
2010
ACM
In GIS and spatial databases, cardinal directions are frequently used as selection and join criteria in query languages. However, most cardinal direction models are only able to h...
153
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CIKM
2009
Springer
15 years 8 months ago
2009
Springer
Supporting semantic queries in relational databases is essential to many advanced applications. Recently, with the increasing use of ontology in various applications, the need for...
267
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GIS
2004
ACM
16 years 6 months ago
2004
ACM
Grid is a promising e-Science infrastructure that promotes and facilitates the sharing and collaboration in the use of distributed heterogeneous resources through Virtual Organiza...
162
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DATESO
2009
15 years 2 months ago
2009
Top trees are a dynamic self-adjusting data structure that can be used by any tree algorithm. Actually, an arbitrary number of different tree algorithms can use a single structure....
139
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VLDB
2004
ACM
15 years 10 months ago
2004
ACM
PIVOT and UNPIVOT, two operators on tabular data that exchange rows and columns, enable data transformations useful in data modeling, data analysis, and data presentation. They ca...