522 search results - page 51 / 105 » Answering Aggregation Queries in a Secure System Model |
MOBISYS
2007
ACM
14 years 7 months ago
2007
ACM
We present rendezvous-based access control for access control in the pre-hospital environment. Rendezvous-based access control is a simple cryptographic access control method that...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
The growing sophistication and diversity of malicious activity in the Internet presents a serious challenge for network security analysts. In this paper, we describe our efforts t...
DBPL
1997
Springer
13 years 12 months ago
1997
Springer
Abstract. Multidimensional databases are large collections of data, often historical, used for sophisticated analysis oriented to decision making. This activity is supported by an ...
IEEESCC
2005
IEEE
14 years 1 months ago
2005
IEEE
In this paper, we introduce and explore a new computing paradigm we call knowledge as a service, in which a knowledge service provider, via its knowledge server, answers queries p...
ADBIS
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...