217 search results - page 2 / 44 » An optimization for query answering on ALC database |
VLDB
1999
ACM
13 years 9 months ago
1999
ACM
The problem of nding the best answers to a query quickly, rather than nding all answers, is of increasing importance as relational databases are applied in multimedia and decision...
VLDB
1991
ACM
13 years 8 months ago
1991
ACM
Queries in object-oriented datab;Lqcs are formulated against a class and retrieve instnnccls of the class sat,isfying a certain predicate on the att,riblltes of the class. The pre...
HICSS
2003
IEEE
13 years 10 months ago
2003
IEEE
We apply multiple query optimization to batches of pull (on-demand) requests in a mobile database system. The resulting view can answer several queries at once, and it is broadcas...
CIDR
2011
12 years 8 months ago
2011
For some problems, human assistance is needed in addition to automated (algorithmic) computation. In sharp contrast to existing data management approaches, where human input is ei...
SIGMOD
2006
ACM
14 years 5 months ago
2006
ACM
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...