55 search results - page 4 / 11 » Trajectory Databases: Data Models, Uncertainty and Complete ... |
201
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SIGMOD
2008
ACM
16 years 1 months ago
2008
ACM
To deal with data uncertainty, existing probabilistic database systems augment tuples with attribute-level or tuple-level probability values, which are loaded into the database al...
118
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SIGMOD
2000
ACM
15 years 5 months ago
2000
ACM
We consider spatio-temporal databases supporting spatial objects with continuously changing position and extent, termed moving objects databases. We formally define a data model f...
193
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ICDE
2006
IEEE
16 years 2 months ago
2006
IEEE
This paper explores an inherent tension in modeling and querying uncertain data: simple, intuitive representations of uncertain data capture many application requirements, but the...
126
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DBPL
2001
Springer
15 years 5 months ago
2001
Springer
Abstract. We address a fundamental question concerning spatio-temporal database systems: “What are exactly spatio-temporal queries?” We define spatio-temporal queries to be co...
RTDB
1996
15 years 2 months ago
1996
We are developing an object-oriented real-time database system that includes a relationally complete query language. Unlike conventional query optimizers, our optimizer estimates ...