220 search results - page 34 / 44 » Supporting Queries with Imprecise Constraints |
BTW
2007
Springer
14 years 21 days ago
2007
Springer
: Schema mapping techniques for data exchange have become popular and useful tools both in research and industry. A schema mapping relates a source schema with a target schema via ...
CAISE
1998
Springer
14 years 28 days ago
1998
Springer
We show how model extensibility of object-oriented data management systems can be achieved through the combination of a highlevel core object data model and an architecture designe...
DBSEC
2006
13 years 10 months ago
2006
We demonstrate how access control models and policies can be represented by using term rewriting systems, and how rewriting may be used for evaluating access requests and for provi...
PKDD
2005
Springer
14 years 2 months ago
2005
Springer
Abstract. The paradigm of pattern discovery based on constraints was introduced with the aim of providing to the user a tool to drive the discovery process towards potentially inte...
CSFW
2004
IEEE
14 years 13 days ago
2004
IEEE
We study the specification of access control policy in large-scale distributed systems. We present Cassandra, a language and system for expressing policy, and the results of a sub...