Sciweavers

22 search results - page 1 / 5
» On the complexity of nonrecursive XQuery and functional quer...
Sort
View
APWEB
2007
Springer
13 years 10 months ago
Untyped XQuery Canonization
XQuery is a powerful language defined by the W3C to query XML documents. Its query functionalities and its expressiveness satisfy the major needs of both the database community an...
Nicolas Travers, Tuyet-Tram Dang-Ngoc, Tianxiao Li...
SIGMOD
2007
ACM
122views Database» more  SIGMOD 2007»
14 years 4 months ago
XQuery layers
XML is the data interoperability standard in many application domains. Therefore, an increasing number of researchers and professionals, who are not computer scientists (although ...
Daniele Braga, Alessandro Campi, Stefano Ceri, Pao...
PODS
2008
ACM
204views Database» more  PODS 2008»
14 years 4 months ago
Annotated XML: queries and provenance
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
J. Nathan Foster, Todd J. Green, Val Tannen
ISCI
2008
93views more  ISCI 2008»
13 years 4 months ago
Safety, domain independence and translation of complex value database queries
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
Hong-Cheu Liu, Jeffrey Xu Yu, Weifa Liang