2957 search results - page 521 / 592 » An Integrated System for Database Visualization |
228
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GIS
2004
ACM
16 years 4 months ago
2004
ACM
The R*-tree is a state-of-the-art spatial index structure. It has already found its way into commercial systems. The most important improvement of the R*-tree over the original R-...
223
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GIS
2005
ACM
16 years 4 months ago
2005
ACM
Several application contexts require the ability to use together and compare different geographic datasets (maps) concerning the same or overlapping areas. This is for example the...
248
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PODS
2004
ACM
16 years 3 months ago
2004
ACM
A schema mapping is a specification that describes how data structured under one schema (the source schema) is to be transformed into data structured under a different schema (the...
131
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CCS
2007
ACM
15 years 9 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
135
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EDBT
2009
ACM
15 years 6 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...