297 search results - page 7 / 60 » On the Decidability of Consistent Query Answering |
ICDT
2001
ACM
14 years 26 days ago
2001
ACM
In information-integration systems, source relations often have limitations on access patterns to their data; i.e., when one must provide values for certain attributes of a relatio...
VLDB
1997
ACM
14 years 17 days ago
1997
ACM
Information integration systems have to cope with the different and limited query interfaces of the underlying information sources. First, the integration systems need description...
IJCAI
2003
13 years 9 months ago
2003
In this paper we address the problem of query answering and rewriting in global-as-view data integration systems, when key and inclusion dependencies are expressed on the global i...
PODS
2003
ACM
14 years 8 months ago
2003
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
DAGSTUHL
2003
13 years 9 months ago
2003
In this chapter, we summarize the research on querying inconsistent databases we have been conducting over the last five years. The formal framework we have used is based on two c...