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» Querying Complex Structured Databases
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DBISP2P
2006
Springer
195views Database» more  DBISP2P 2006»
13 years 11 months ago
XML Query Routing in Structured P2P Systems
Abstract. This paper addresses the problem of data placement, indexing, and querying large XML data repositories distributed over an existing P2P service infrastructure. Our archit...
Leonidas Fegaras, Weimin He, Gautam Das, David Lev...
ICDT
2009
ACM
105views Database» more  ICDT 2009»
14 years 8 months ago
Efficient data structures for range-aggregate queries on trees
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
Hao Yuan, Mikhail J. Atallah
PODS
2007
ACM
102views Database» more  PODS 2007»
14 years 8 months ago
The complexity of query containment in expressive fragments of XPath 2.0
Query containment has been studied extensively for fragments of
Balder ten Cate, Carsten Lutz
SIGMOD
2000
ACM
164views Database» more  SIGMOD 2000»
14 years 7 days ago
A Data Model and Data Structures for Moving Objects Databases
We consider spatio-temporal databases supporting spatial objects with continuously changing position and extent, termed moving objects databases. We formally define a data model f...
Luca Forlizzi, Ralf Hartmut Güting, Enrico Na...
DBVIS
1993
101views Database» more  DBVIS 1993»
13 years 12 months ago
Using Visualization to Support Data Mining of Large Existing Databases
In this paper, we present ideas how visualization technology can be used to improve the difficult process of querying very large databases. With our VisDB system, we try to provid...
Daniel A. Keim, Hans-Peter Kriegel