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159
Voted
VLDB
1994
ACM
15 years 11 months ago
1994
ACM
In this paper, we consider various spatial relationships that are of general interest in pictorial database systems. We present a set of rules that allow us to deduce new relation...
207
Voted
GISCIENCE
2008
Springer
15 years 8 months ago
2008
Springer
Road networks, roads, and junctions are examples of natural language terms whose semantics can be described by affordances of their physical referents. In order to define affordanc...
184
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IAJIT
2008
15 years 7 months ago
2008
: In this paper a run-time model is proposed. The run-time model enforces integrity constraints for attributes that are derived from composition and inheritance hierarchies. The ru...
201
Voted
AGIS
2000
15 years 6 months ago
2000
Following a brief discussion on various aspects of data quality, possible methods are examined for the detection of errors in a spatial database. Using examples, we introduce the c...
183
Voted
ERSHOV
2006
Springer
15 years 10 months ago
2006
Springer
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...