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» A study of query length
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ICDE
1999
IEEE
113views Database» more  ICDE 1999»
14 years 9 months ago
I/O Complexity for Range Queries on Region Data Stored Using an R-tree
In this paper we study the node distribution of an Rtree storing region data, like for instance islands, lakes or human-inhabited areas. We will show that real region datasets are...
Guido Proietti, Christos Faloutsos
P2P
2006
IEEE
144views Communications» more  P2P 2006»
14 years 2 months ago
Schema Caching for Improved XML Query Processing in P2P Systems
The advent and popularity of the World Wide Web (WWW) has enabled access to a variety of semi-structured data and, when available, this data follows some common XML schema. On the...
Christos Doulkeridis, Kjetil Nørvåg, ...
SIGMOD
2005
ACM
136views Database» more  SIGMOD 2005»
14 years 1 months ago
Optimizing recursive queries in SQL
Recursion represents an important addition to the SQL language. This work focuses on the optimization of linear requeries in SQL. To provide an abstract framework for discussion, ...
Carlos Ordonez
IDEAS
2002
IEEE
135views Database» more  IDEAS 2002»
14 years 1 months ago
On Implicate Discovery and Query Optimization
Boolean expression simplification is a well-known problem in the history of Computer Science. The problem of determining prime implicates from an arbitrary Boolean expression has...
Kristofer Vorwerk, G. N. Paulley
MM
1997
ACM
133views Multimedia» more  MM 1997»
14 years 11 days ago
Supporting Similarity Queries in MARS
To address the emerging needs of applications that require access to and retrieval of multimediaobjects, we are developing the Multimedia Analysis and Retrieval System (MARS) in o...
Michael Ortega, Yong Rui, Kaushik Chakrabarti, Sha...