298 search results - page 31 / 60 » Query Rewriting in DL-Lite_^(HN)_horn |
116
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SAC
2011
ACM
14 years 1 months ago
2011
ACM
Data stream management systems (DSMSs) process continuous queries over streaming data in real-time adhering to quality of service requirements. The data streams generated from sen...
111
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CSFW
2003
IEEE
15 years 4 months ago
2003
IEEE
SPKI/SDSI is a language for expressing distributed access control policy, derived from SPKI and SDSI. We provide a first-order logic (FOL) semantics for SDSI, and show that it ha...
190
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ICDE
2006
IEEE
16 years 13 days ago
2006
IEEE
We study the problem of continuous relational query processing in Internet-scale overlay networks realized by distributed hash tables. We concentrate on the case of continuous two...
174
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VLDB
2001
ACM
15 years 11 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessin...
ICDCS
2007
IEEE
15 years 5 months ago
2007
IEEE
When there are multiple queries posed to the resourceconstrained wireless sensor network, it is critical to process them efficiently. In this paper, we propose a Two-Tier Multipl...