69 search results - page 4 / 14 » Query Planning for Searching Inter-dependent Deep-Web Databa... |
XIMEP
2004
ACM
13 years 11 months ago
2004
ACM
We give an overview on how XQuery processing works in our native XML database system Natix. After a brief description of the query compiler we focus on the aspect of join ordering...
VLDB
2002
ACM
13 years 5 months ago
2002
ACM
In spite of the many decades of progress in database research, surprisingly scientists in the life sciences community still struggle with inefficient and awkward tools for queryin...
PVLDB
2010
13 years 4 months ago
2010
Optimization of join queries based on average selectivities is suboptimal in highly correlated databases. In such databases, relations are naturally divided into partitions, each ...
ER
2004
Springer
13 years 11 months ago
2004
Springer
The envisioned Semantic Web aims to provide richly annotated and explicitly structured Web pages in XML, RDF, or description logics, based upon underlying ontologies and thesauri. ...
XSYM
2007
Springer
14 years 11 days ago
2007
Springer
To globally optimize execution plans for XQuery expressions, a plan generator must generate and compare plan alternatives. In proven compiler architectures, the unit of plan genera...