1482 search results - page 225 / 297 » An Algebra for XML Query |
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
ICDT
2009
ACM
14 years 10 months ago
2009
ACM
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
VLDB
2007
ACM
14 years 3 months ago
2007
ACM
In many applications, the underlying data (the web, an XML document, or a relational database) can be seen as a graph. These graphs may be enriched with weights, associated with t...
DGO
2004
13 years 10 months ago
2004
This paper describes a Web-based query system for semantically heterogeneous government-produced data. Geospatial Web-based information systems and portals are currently being dev...