Sciweavers

159 search results - page 14 / 32
» Performing grouping and aggregate functions in XML queries
Sort
View
VLDB
2001
ACM
127views Database» more  VLDB 2001»
14 years 7 months ago
Efficiently publishing relational data as XML documents
: XML is rapidly emerging as a standard for exchanging business data on the World Wide Web. For the foreseeable future, however, most business data will continue to be stored in re...
Jayavel Shanmugasundaram, Eugene J. Shekita, Rimon...
DBPL
2005
Springer
93views Database» more  DBPL 2005»
13 years 9 months ago
On the Expressive Power of XQuery Fragments
XQuery is known to be a powerful XML query language with many bells and whistles. For many common queries we do not need all the expressive power of XQuery. We investigate the eff...
Jan Hidders, Stefania Marrara, Jan Paredaens, Roel...
TKDE
2012
253views Formal Methods» more  TKDE 2012»
11 years 9 months ago
Horizontal Aggregations in SQL to Prepare Data Sets for Data Mining Analysis
—Preparing a data set for analysis is generally the most time consuming task in a data mining project, requiring many complex SQL queries, joining tables and aggregating columns....
Carlos Ordonez, Zhibo Chen 0002
DOLAP
2000
ACM
13 years 11 months ago
Comparing Nested GPSJ Queries in Multidimensional Databases
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...
Matteo Golfarelli, Stefano Rizzi
EDBT
2010
ACM
210views Database» more  EDBT 2010»
13 years 9 months ago
Keyword search for data-centric XML collections with long text fields
Users who are unfamiliar with database query languages can search XML data sets using keyword queries. Current approaches for supporting such queries are either for textcentric XM...
Arash Termehchy, Marianne Winslett