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GIS
2003
ACM
16 years 8 months ago
Nearest neighbor queries in road networks
With wireless communications and geo-positioning being widely available, it becomes possible to offer new e-services that provide mobile users with information about other mobile ...
Christian S. Jensen, Jan Kolárvr, Torben Ba...
SIGMOD
2007
ACM
144views Database» more  SIGMOD 2007»
16 years 7 months ago
GhostDB: querying visible and hidden data without leaks
Imagine that you have been entrusted with private data, such as corporate product information, sensitive government information, or symptom and treatment information about hospita...
Nicolas Anciaux, Mehdi Benzine, Luc Bouganim, Phil...
SIGMOD
2006
ACM
109views Database» more  SIGMOD 2006»
16 years 7 months ago
OMCAT: optimal maintenance of continuous queries' answers for trajectories
We present our prototype system, OMCAT, which optimizes the reevaluation of a set of pending continuous spatio-temporal queries on trajectory data, when some of the trajectories a...
Hui Ding, Goce Trajcevski, Peter Scheuermann
SIGMOD
2006
ACM
129views Database» more  SIGMOD 2006»
16 years 7 months ago
Recovery from "bad" user transactions
User written transaction code is responsible for the "C" in ACID transactions, i.e., taking the database from one consistent state to the next. However, user transaction...
David B. Lomet, Zografoula Vagena, Roger S. Barga
ICSE
2005
IEEE-ACM
16 years 7 months ago
Safe query objects: statically typed objects as remotely executable queries
When building scalable systems that involve general-purpose computation and persistent data, object-oriented languages and relational databases are often essential components. Yet...
William R. Cook, Siddhartha Rai