1125 search results - page 21 / 225 » Query Answering in Inconsistent Databases |
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
We review the notion of hypertree width, a measure of the degree of cyclicity of hypergraphs that is useful for identifying and solving efficiently easy instances of hard problems...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
Answering queries using materialized views has been well studied in the context of structured queries and has shown significant performance benefits. Despite the popularity of keyw...
FOIKS
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. We give a general framework for approximate query processing in semistructured databases. We focus on regular path queries, which are the integral part of most of the que...
VLDB
2006
ACM
14 years 8 months ago
2006
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find a set of views that can compute the answers to the queries, such that the amoun...
VLDB
1999
ACM
13 years 12 months ago
1999
ACM
The problem of nding the best answers to a query quickly, rather than nding all answers, is of increasing importance as relational databases are applied in multimedia and decision...