9 search results - page 2 / 2 » A heuristic approach for checking containment of generalized... |
LPAR
2005
Springer
13 years 11 months ago
2005
Springer
Integrity checking is an essential means for the preservation of the intended semantics of a deductive database. Incrementality is the only feasible approach to checking and can be...
SIGMOD
2006
ACM
14 years 5 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
ICDE
2007
IEEE
13 years 12 months ago
2007
IEEE
Trust management is a form of access control that uses delegation to achieve scalability beyond a single organization or federation. However, delegation can be difficult to contr...
SIGMOD
1995
ACM
13 years 9 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...