2850 search results - page 28 / 570 » Answering Queries using Humans, Algorithms and Databases |
SIGMOD
2006
ACM
14 years 8 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
CIKM
2005
Springer
14 years 2 months ago
2005
Springer
This paper shows a scheme for incremental evaluation of XPath queries. Here, we focus on a monotone fragment of XPath, i.e., when a data is deleted from (or inserted to) the datab...
EDBT
2002
ACM
14 years 8 months ago
2002
ACM
Abstract. We present a simple query language for XML, which supports hierarchical, Boolean-connected query patterns. The interpretation of a query is founded on cost-based query tr...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
Data collections often have inconsistencies that arise due to a variety of reasons, and it is desirable to be able to identify and resolve them efficiently. Set similarity queries ...
DOLAP
2009
ACM
14 years 3 months ago
2009
ACM
In this paper, we investigate the problem of answering top-k queries via materialized views. We provide theoretical guarantees for the adequacy of a view to answer a top-k query, ...