1004 search results - page 45 / 201 » Safe Constraint Queries |
APWEB
2004
Springer
14 years 2 months ago
2004
Springer
Queries to data warehouses often involve hundreds of complex aggregations over large volumes of data, and so it is infeasible to compute these queries by scanning the data sources ...
KES
2007
Springer
14 years 2 months ago
2007
Springer
Abstract. Access control for semi-structured data is nontrivial, as witnessed by the number of access control approaches in recent literature. Recently a case has been made for exp...
PODS
2000
ACM
14 years 1 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 ...
ICDT
2009
ACM
14 years 9 months ago
2009
ACM
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...
SIGMOD
2008
ACM
14 years 9 months ago
2008
ACM
As XML-based messages have become common in many client-server protocols, there is a need to protect application servers from invalid or dangerous messages. This leads to the XML ...