2574 search results - page 57 / 515 » Typed Query Languages for Databases Containing Queries |
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
This article proposes a core query algebra for probabilistic databases. In essence, this core is part of the query languages of most probabilistic database systems proposed so far...
PODS
2004
ACM
14 years 8 months ago
2004
ACM
The important challenge of evaluating XPath queries over XML streams has sparked much interest in the past few years. A number of algorithms have been proposed, supporting wider f...
PODS
2008
ACM
14 years 8 months ago
2008
ACM
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
SIGMOD
2005
ACM
14 years 2 months ago
2005
ACM
Recursion represents an important addition to the SQL language. This work focuses on the optimization of linear requeries in SQL. To provide an abstract framework for discussion, ...
CLEF
2005
Springer
14 years 2 months ago
2005
Springer
This paper describes the architecture of a Bulgarian–Bulgarian question answering system — BulQA. The system relies on a partially parsed corpus for answer extraction. The que...