617 search results - page 68 / 124 » Semantic queries in databases: problems and challenges |
SIGMOD
2005
ACM
14 years 9 months ago
2005
ACM
One of the most challenging problems in the healthcare domain is providing interoperability among healthcare information systems. In order to address this problem, we propose the ...
ICDE
2006
IEEE
14 years 10 months ago
2006
IEEE
A k-NN query finds the k nearest-neighbors of a given point from a point database. When it is sufficient to measure object distance using the Euclidian distance, the key to effici...
KDD
2004
ACM
14 years 9 months ago
2004
ACM
To enable information integration, schema matching is a critical step for discovering semantic correspondences of attributes across heterogeneous sources. While complex matchings ...
WWW
2005
ACM
14 years 9 months ago
2005
ACM
Constructing and maintaining semantic mappings are necessary but troublesome in data sharing systems. While most current work focuses on seeking automated techniques to solve this...
PVLDB
2010
13 years 3 months ago
2010
Recent legislation has increased the requirements of organizations to report data breaches, or unauthorized access to data. While access control policies are used to restrict acce...