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GIS
2002
ACM
15 years 6 months ago
Spatio-temporal evolution: querying patterns of change in databases
This paper contributes a general approach to characterizing patterns of change in a spatio-temporal database. While there is a particular interest in modelling and querying how sp...
Nassima Djafri, Alvaro A. A. Fernandes, Norman W. ...
INFSOF
2002
72views more  INFSOF 2002»
15 years 6 months ago
Translating object-oriented database transactions into relational transactions
In this paper, we present methods of translating transactions from object-oriented database(OODB) to relational database(RDB). The process involves schema mapping in data definiti...
Joseph Fong
HYBRID
2000
Springer
15 years 10 months ago
Dynamical Systems Revisited: Hybrid Systems with Zeno Executions
Results from classical dynamical systems are generalized to hybrid dynamical systems. The concept of limit set is introduced for hybrid systems and is used to prove new results on...
Jun Zhang, Karl Henrik Johansson, John Lygeros, Sh...
ICDE
2006
IEEE
155views Database» more  ICDE 2006»
16 years 8 months ago
Answering Imprecise Queries over Autonomous Web Databases
Current approaches for answering queries with imprecise constraints require user-specific distance metrics and importance measures for attributes of interest - metrics that are ha...
Ullas Nambiar, Subbarao Kambhampati
WWW
2004
ACM
16 years 7 months ago
Providing ranked relevant results for web database queries
Often Web database users experience difficulty in articulating their needs using a precise query. Providing ranked set of possible answers would benefit such users. We propose to ...
Ullas Nambiar, Subbarao Kambhampati