1248 search results - page 200 / 250 » Querying and Updating the File |
PODS
2002
ACM
14 years 10 months ago
2002
ACM
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
PODS
2002
ACM
14 years 10 months ago
2002
ACM
We consider the fundamental operation of applying a conjunction of selection conditions to a set of records. With large main memories available cheaply, systems may choose to keep...
ICPP
2008
IEEE
14 years 4 months ago
2008
IEEE
Abstract—Federated systems have recently attracted much attention because they allow loosely coupled organizations to share resources for common benefits. However, discovering r...
PLDI
2005
ACM
14 years 3 months ago
2005
ACM
We introduce a language and system that supports definition and composition of complex run-time security policies for Java applications. Our policies are comprised of two sorts o...
DILS
2005
Springer
14 years 3 months ago
2005
Springer
For execution of complex biological queries, data integration systems often use several intermediate data sources because the domain coverage of individual sources is limited. Qual...