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» Expressing OLAP operators with the TAX XML algebra
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WEBDB
2005
Springer
105views Database» more  WEBDB 2005»
13 years 11 months ago
On the Expressive Power of Node Construction in XQuery
In the relational model it has been shown that the flat relational algebra has the same expressive power as the nested relational algebra, as far as queries over flat relations ...
Wim Le Page, Jan Hidders, Philippe Michiels, Jan P...
SIGMOD
2004
ACM
156views Database» more  SIGMOD 2004»
14 years 5 months ago
Tree Logical Classes for Efficient Evaluation of XQuery
XML is widely praised for its flexibility in allowing repeated and missing sub-elements. However, this flexibility makes it challenging to develop a bulk algebra, which typically ...
Stelios Paparizos, Yuqing Wu, Laks V. S. Lakshmana...
TDM
2004
203views Database» more  TDM 2004»
13 years 7 months ago
Relational Algebra: Mother Tongue - XQuery: Fluent
This work may be seen as a further proof of the versatility of the relational database model. Here, we add XQuery to the catalog of languages which RDBMSs are able to "speak&...
Torsten Grust, Jens Teubner
ICDE
2005
IEEE
101views Database» more  ICDE 2005»
13 years 11 months ago
Optimization of Nested XQuery Expressions with Orderby Clauses
— XQuery, the defacto XML query language, is a functional language with operational semantics, which precludes the direct application of classical query optimization techniques. ...
Song Wang, Elke A. Rundensteiner, Murali Mani
VLDB
2004
ACM
117views Database» more  VLDB 2004»
13 years 11 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