185 search results - page 15 / 37 » Precise complexity analysis for efficient datalog queries |
CSFW
2004
IEEE
15 years 3 months ago
2004
IEEE
We study the specification of access control policy in large-scale distributed systems. We present Cassandra, a language and system for expressing policy, and the results of a sub...
DAGSTUHL
2004
15 years 1 months ago
2004
We present the Priority R-tree, or PR-tree, which is the first R-tree variant that always answers a window query using O((N/B)1-1/d + T/B) I/Os, where N is the number of ddimensio...
WWW
2005
ACM
16 years 10 days ago
2005
ACM
This paper addresses the problem of fast retrieval of data from XML documents by providing a labeling schema that can easily handle simple as well as complex XPATH queries and als...
106
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EOR
2006
14 years 11 months ago
2006
The success of a company increasingly depends on timely information (internal or external) being available to the right person at the right time for crucial managerial decision-ma...
103
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WEBI
2007
Springer
15 years 5 months ago
2007
Springer
There is a critical need to design and develop tools tract away the fundamental complexity of XML-based Web services specifications and toolkits, and provide an elegant, intuitive...