6974 search results - page 216 / 1395 » Querying Semi-Structured Data |
IJUFKS
2002
13 years 8 months ago
2002
aint on disclosure risk. Underlying abstractions -- primarily associated with the query space, as well as released and unreleasable sub-tables and frontiers, computational algorith...
ICDE
2006
IEEE
14 years 2 months ago
2006
IEEE
Scientific instruments, such as radio telescopes, colliders, sensor networks, and simulators generate very high volumes of data streams that scientists analyze to detect and under...
DLOG
2011
12 years 11 months ago
2011
We show that, although conjunctive queries over OWL 2 QL ontologies are reducible to database queries, no algorithm can construct such a reduction in polynomial time without changi...
DEBS
2010
ACM
13 years 3 months ago
2010
ACM
Many XML filtering systems have emerged in recent years identifying XML data that structurally match XPath queries in an efficient way. However, apart from structural matching, it...
WWW
2004
ACM
14 years 9 months ago
2004
ACM
This paper describes a query algebra for queries over XML p2p databases that provides explicit mechanisms for modeling data dissemination, replication constraints, and for capturi...