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» A Nested Relational Approach to Processing SQL Subqueries
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BNCOD
2007
137views Database» more  BNCOD 2007»
13 years 6 months ago
Isolating Order Semantics in Order-Sensitive XQuery-to-SQL Translation
Order is essential for XML query processing. Efficient XML processing with order consideration over relational storage is non-trivial, especially for complex nested XQuery expressi...
Song Wang, Ling Wang, Elke A. Rundensteiner
ICDE
2007
IEEE
117views Database» more  ICDE 2007»
14 years 6 months ago
Unnesting Scalar SQL Queries in the Presence of Disjunction
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
Matthias Brantner, Norman May, Guido Moerkotte
VLDB
2004
ACM
144views Database» more  VLDB 2004»
13 years 10 months ago
Returning Modified Rows - SELECT Statements with Side Effects
SQL in the IBM® DB2® Universal Database™ for Linux®, UNIX®, and Windows® (DB2 UDB) database management product has been extended to support nested INSERT, UPDATE, and DELET...
Andreas Behm, Serge Rielau, Richard Swagerman
VLDB
2004
ACM
117views Database» more  VLDB 2004»
13 years 10 months ago
XQuery on SQL Hosts
Relational database systems may be turned into efficient XML and XPath processors if the system is provided with a suitable relational tree encoding. This paper extends this relat...
Torsten Grust, Sherif Sakr, Jens Teubner
IDEAS
2005
IEEE
137views Database» more  IDEAS 2005»
13 years 11 months ago
Order-Sensitive XML Query Processing over Relational Sources: An Algebraic Approach
The XML data is order-sensitive. The order problem, that is how ordered XML documents and order-sensitive queries over it can be efficiently supported when mapped into the unorde...
Ling Wang, Song Wang, Brian Murphy, Elke A. Runden...