In this paper, we propose an observation-based fine grained access control (OFGAC)
mechanism where data are made accessible at various level of abstraction according to …

Fine Grained Access Control (FGAC) provides users the access to the non-confidential
database information while preventing unauthorized leakage of the confidential data. It …

Databases are increasingly being used to store information covered by heterogeneous
policies, which require support for access control with great flexibility. This has led to …

Fine-grained access control (FGAC) must be supported by relational databases to satisfy the
requirements of privacy preserving and Internet-based applications. Though much work on …

As a more flexible and effective access control mechanism in databases, fine-grained
access control (FGAC) has drawn considerable attention from industrial and research …

Ensuring security of data is one of the fundamental needs of people. In this context, issues
related to confidentiality, integrity and availability of the data arise with a crucial importance …

Abstract The eXtensible Markup Language (XML) is recognized as a simple and universal
standard for storing and exchanging information on the web. The risk of unauthorized …

Today, there are countless terabytes of data processed by IT systems, and we store a
measurable portion of that data in the relational database management systems (RDBMS) …

We propose a model-based characterization of fine-grained access control (FGAC)
authorization for SQL queries. More specifically, we define a predicate AuthQuery () that …

In this paper, we present a rule-based approach to fine-grained data-dependent access
control for database systems. Authorization rules in this framework are described in a logical …