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ICDT
2010
ACM
133views Database» more  ICDT 2010»
16 years 16 days ago
On the Tradeoff between Mapping and Querying Power in XML Data Exchange
In XML data exchange, a schema mapping specifies rules for restructuring a source document under the target schema, and queries over the target document must be answered in a way...
Shunichi Amano, Claire David, Leonid Libkin, Filip...
EDBT
2009
ACM
172views Database» more  EDBT 2009»
16 years 9 days ago
Continuous visible nearest neighbor queries
In this paper, we identify and solve a new type of spatial queries, called continuous visible nearest neighbor (CVNN) search. Given a data set P, an obstacle set O, and a query li...
Yunjun Gao, Baihua Zheng, Wang-Chien Lee, Gencai C...
MIS
2001
Springer
148views Multimedia» more  MIS 2001»
16 years 3 days ago
Querying Images in the DISIMA DBMS
Because digital images are not meaningful by themselves, images are often coupled with some descriptive or qualitative data in an image database. Moreover the division of these da...
Vincent Oria, M. Tamer Özsu, Paul Iglinski
CIKM
1999
Springer
15 years 12 months ago
Rule-Based Query Optimization, Revisited
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
Lane Warshaw, Daniel P. Miranker
CHI
1994
ACM
15 years 11 months ago
Visual information seeking: tight coupling of dynamic query filters with starfield displays
This paper offers new principles for visual information seeking (VIS). A key concept is to support browsing, which is distinguished from familiar query composition and information...
Christopher Ahlberg, Ben Shneiderman