316 search results - page 29 / 64 » Providing Time-Related Constraints for Conventional Database... |
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
We propose a class of constraints, referred to as conditional functional dependencies (CFDs), and study their applications in data cleaning. In contrast to traditional functional ...
IWMMDBMS
1998
13 years 9 months ago
1998
Most applications that access large data objects do so through file systems, but file systems provide an incomplete solution, as they maintain insufficient metadata and do not pro...
CIKM
2004
Springer
14 years 1 months ago
2004
Springer
We study the representation, derivation and utilization of a special kind of constraints in multidatabase systems. A major challenge is when component database schemas are schemat...
SIGMOD
2011
ACM
12 years 11 months ago
2011
ACM
Correctness of data residing in a database is vital. While integrity constraint enforcement can often ensure data consistency, it is inadequate to protect against updates that inv...
SIGMOD
2010
ACM
13 years 8 months ago
2010
ACM
Trajectory search has long been an attractive and challenging topic which blooms various interesting applications in spatial-temporal databases. In this work, we study a new probl...