1101 search results - page 187 / 221 » Fault-Tolerance in Distributed Query Processing |
ICDE
2009
IEEE
15 years 4 months ago
2009
IEEE
— Information Systems are subject to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative nature. Su...
CCS
2007
ACM
15 years 3 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
WWW
2005
ACM
15 years 10 months ago
2005
ACM
We consider the problem of indexing high-dimensional data for answering (approximate) similarity-search queries. Similarity indexes prove to be important in a wide variety of sett...
151
Voted
SIGMOD
2007
ACM
15 years 9 months ago
2007
ACM
Sketching techniques can provide approximate answers to aggregate queries either for data-streaming or distributed computation. Small space summaries that have linearity propertie...
SIGCOMM
2003
ACM
15 years 2 months ago
2003
ACM
Content-based full-text search is a challenging problem in Peer-toPeer (P2P) systems. Traditional approaches have either been centralized or use flooding to ensure accuracy of th...