NAIST-IS-MT9551042: Kazuaki Sakaguchi
A Content-Dependent Authorization Model and Efficient Access Control
for Object-Oriented Databases
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Access control is a key technology for providing data security in
database management systems.
Recently, various authorization models for object-oriented databases
(OODBs) have been proposed.
However, few of them support
content-dependent access control.
In this thesis, we propose a content-dependent authorization model
applicable to OODB
schemas proposed up to now, and define a description language that
specifies inference rules for authorizations.
Moreover, we present an efficient algorithm for deciding whether a
given access request is permitted with respect to given authorizations
and inference rules.