48 search results - page 8 / 10 » Locally Consistent Transformations and Query Answering in Da... |
ICDE
2004
IEEE
14 years 9 months ago
2004
IEEE
XML and other types of semi-structured data are typically represented by a labeled directed graph. To speed up path expression queries over the graph, a variety of structural inde...
GIS
2002
ACM
13 years 7 months ago
2002
ACM
The focus of this paper is on interoperability issues to achieve data integration in distributed databases for geographic applications. Our concrete application is in the context ...
WWW
2003
ACM
14 years 8 months ago
2003
ACM
The Semantic Web envisions a World Wide Web in which data is described with rich semantics and applications can pose complex queries. To this point, researchers have defined new l...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Given that commercial search engines cover billions of web pages, efficiently managing the corresponding volumes of disk-resident data needed to answer user queries quickly is a f...
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...