383 search results - page 7 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
DLOG
2007
13 years 9 months ago
2007
An important reasoning task, in addition to the standard DL reasoning services, is conjunctive query answering. In this paper, we present a decision procedure for conjunctive query...
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
—It is increasingly common to find graphs in which edges bear different types, indicating a variety of relationships. For such graphs we propose a class of reachability queries ...
PODS
2000
ACM
13 years 12 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
SEMWEB
2010
Springer
13 years 5 months ago
2010
Springer
We develop query relaxation techniques for regular path queries and combine them with query approximation in order to support flexible querying of RDF data when the user lacks know...
ICDT
2012
ACM
11 years 10 months ago
2012
ACM
The problems of query containment, equivalence, and minimization are recognized as very important in the context of query processing, specifically of query optimization. In their...