951 search results - page 23 / 191 » Groupwise Processing of Relational Queries |
ICIP
2002
IEEE
15 years 11 months ago
2002
IEEE
In this paper we propose a method to retrieve sketches stored in the form of multiple strokes, by extracting the shape information for each stroke and by considering the spatial r...
BTW
2003
Springer
15 years 3 months ago
2003
Springer
Abstract: In order to achieve efficient execution plans for queries comprising userdefined data types and predicates, the database system has to be provided with appropriate index ...
ICDE
2007
IEEE
15 years 4 months ago
2007
IEEE
In a secure mediated information system, confidentiality is one of the main concerns when transmitting data from datasources to clients via a mediator. We present three approache...
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
This paper describes query processing in the DBO database system. Like other database systems designed for ad-hoc, analytic processing, DBO is able to compute the exact answer to ...
MIDDLEWARE
2005
Springer
15 years 3 months ago
2005
Springer
These last years, the evolution of nomadic terminals and mobile networks has yield to the development of the ubiquitous computing. In this context, actual query evaluation and opt...