12 search results - page 1 / 3 » On Containment of Conjunctive Queries with Arithmetic Compar... |
EDBT
2004
ACM
14 years 10 months ago
2004
ACM
EDBT
2006
ACM
14 years 10 months ago
2006
ACM
The problem of rewriting queries using views has received significant attention because of its applications in a wide variety of datamanagement problems. For select-project-join SQ...
ICDT
2001
ACM
14 years 2 months 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...
PODS
2000
ACM
14 years 2 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 ...
EDBT
2008
ACM
14 years 10 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...