710 search results - page 92 / 142 » Relational Expressive Power of Constraint Query Languages |
PVLDB
2010
13 years 6 months ago
2010
Independence analysis is the problem of determining whether an update affects the result of a query, e.g. a constraint or materialized view. We develop a new, modular framework fo...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
PVLDB
2008
13 years 7 months ago
2008
This paper studies, for the first time, the management of type information for an important class of semi-structured data: nested DAGs (Directed Acyclic Graphs) that describe exec...
XSYM
2007
Springer
14 years 1 months ago
2007
Springer
Several web applications (such as processing RSS feeds or web service messages) rely on XPath-based data manipulation tools. Web developers need to use XPath queries effectively o...
ICLP
2009
Springer
14 years 8 months ago
2009
Springer
We present an implementation of table constraints in CLP(FD). For binary constraints, the supports of each value are represented as a finite-domain variable, and action rules are u...