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» Answering Non-Monotonic Queries in Relational Data Exchange
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ICDT
2012
ACM
293views Database» more  ICDT 2012»
12 years 12 months ago
On the complexity of query answering over incomplete XML documents
Previous studies of incomplete XML documents have identified three main sources of incompleteness – in structural information, data values, and labeling – and addressed data ...
Amélie Gheerbrant, Leonid Libkin, Tony Tan
ADC
2009
Springer
178views Database» more  ADC 2009»
15 years 4 months ago
CSC: Supporting Queries on Compressed Cached XML
Whenever a client frequently has to retrieve, to query and to locally transform large parts of a huge XML document that is stored on a remote web information server, data exchange...
Stefan Böttcher, Rita Hartel
ICDE
2008
IEEE
215views Database» more  ICDE 2008»
15 years 10 months ago
Fast and Simple Relational Processing of Uncertain Data
This paper introduces U-relations, a succinct and purely relational representation system for uncertain databases. U-relations support attribute-level uncertainty using vertical pa...
Lyublena Antova, Thomas Jansen, Christoph Koch, Da...
AMW
2010
14 years 11 months ago
Certification and Authentication of Data Structures
We study query authentication schemes, algorithmic and cryptographic constructions that provide efficient and secure protocols for verifying the results of queries over structured...
Roberto Tamassia, Nikos Triandopoulos
VLDB
2007
ACM
118views Database» more  VLDB 2007»
15 years 9 months ago
Materialized Views in Probabilistic Databases for Information Exchange and Query Optimization
Views over probabilistic data contain correlations between tuples, and the current approach is to capture these correlations using explicit lineage. In this paper we propose an al...
Christopher Re, Dan Suciu