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DBPL
2001
Springer
15 years 2 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...
GRAPHITE
2003
ACM
15 years 3 months ago
2003
ACM
Many substantial geographic information systems (GIS) have been designed for use by expert users. As a result, nonexpert users often find them difficult to use. This paper present...
OTM
2009
Springer
15 years 4 months ago
2009
Springer
Collaboration in modeling is essential to success, but ORM diagrams intimidate many business people, and most would never install an ORM modeling tool on their computers. The Const...
PODS
2008
ACM
15 years 10 months ago
2008
ACM
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
BTW
2005
Springer
15 years 3 months ago
2005
Springer
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...