210 search results - page 37 / 42 » Complex Group-By Queries for XML |
WWW
2005
ACM
14 years 7 months ago
2005
ACM
Constructing and maintaining semantic mappings are necessary but troublesome in data sharing systems. While most current work focuses on seeking automated techniques to solve this...
VLDB
2001
ACM
13 years 11 months ago
2001
ACM
Queries navigate semistructured data via path expressions, and can be accelerated using an index. Our solution encodes paths as strings, and inserts those strings into a special i...
PODS
2005
ACM
14 years 6 months ago
2005
ACM
We study the satisfiability problem associated with XPath in the presence of DTDs. This is the problem of determining, given a query p in an XPath fragment and a DTD D, whether or...
PLANX
2007
13 years 8 months ago
2007
We present an algorithm to solve XPath decision problems under regular tree type constraints and show its use to statically typecheck XPath queries. To this end, we prove the deci...
CSR
2007
Springer
14 years 26 days ago
2007
Springer
Traditionally, data that has both linear and hierarchical structure, such as annotated linguistic data, is modeled using ordered trees and queried using tree automata. In this pap...