178 search results - page 9 / 36 » Answering Recursive Queries Using Views |
ICFP
2008
ACM
14 years 7 months ago
2008
ACM
Optimal path queries are queries to obtain an optimal path specified by a given criterion of optimality. There have been many studies to give efficient algorithms for classes of o...
WEBDB
2009
Springer
14 years 1 months ago
2009
Springer
The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
DBPL
1995
Springer
13 years 11 months ago
1995
Springer
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
IJCAI
1997
13 years 8 months ago
1997
Generating query-answering plans for information gathering agents requires to translate a user query, formulated in terms of a set of virtual relations, to a query that uses relat...
PODS
2005
ACM
14 years 7 months ago
2005
ACM
We investigate the question of whether a query can be answered using a set V of views. We first define the problem in information-theoretic terms: we say that V determines if V pr...