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» Improved Query Plans for Unnesting Nested SQL Queries
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ICDE
2000
IEEE
125views Database» more  ICDE 2000»
14 years 7 months ago
An Algebraic Compression Framework for Query Results
Decision-support applications in emerging environments require that SQL query results or intermediate results be shipped to clients for further analysis and presentation. These cl...
Zhiyuan Chen, Praveen Seshadri
EDBT
2004
ACM
147views Database» more  EDBT 2004»
14 years 6 months ago
Projection Pushing Revisited
The join operation, which combines tuples from multiple relations, is the most fundamental and, typically, the most expensive operation in database queries. The standard approach t...
Benjamin J. McMahan, Guoqiang Pan, Patrick Porter,...
CORR
2008
Springer
120views Education» more  CORR 2008»
13 years 6 months ago
XQuery Join Graph Isolation
A purely relational account of the true XQuery semantics can turn any relational database system into an XQuery processor. Compiling nested expressions of the fully compositional X...
Torsten Grust, Manuel Mayr, Jan Rittinger
VLDB
2005
ACM
185views Database» more  VLDB 2005»
14 years 6 months ago
Storing and querying XML data using denormalized relational databases
XML database systems emerge as a result of the acceptance of the XML data model. Recent works have followed the promising approach of building XML database management systems on un...
Andrey Balmin, Yannis Papakonstantinou
SIGMOD
2010
ACM
153views Database» more  SIGMOD 2010»
13 years 10 months ago
Threshold query optimization for uncertain data
The probabilistic threshold query (PTQ) is one of the most common queries in uncertain databases, where all results satisfying the query with probabilities that meet the threshold...
Yinian Qi, Rohit Jain, Sarvjeet Singh, Sunil Prabh...