This paper describes the security architecture of the IRO-DB database federation, a system supporting interoperable access between relational and object-oriented databases. The security policy developed is a federated, administrative, discretionary access control policy supporting positive, negative, as well as implied authorizations. It includes a procedure for conflict resolution within the s...

–A mobile database is a database that can be connected to by a mobile computing device over a mobile network. Mobile processed information in database systems is distributed, heterogeneous, and replicated. They are endangered by various threats based on user’s mobility and restricted mobile resources of portable devices and wireless links. Since mobile circumstances can be very dynamic, standar...

Food security has a dynamic notion during the time and may be affected by various domestic and global factors.Nevertheless, Iranian policy makers consider food security as same as self-sufficiency in agricultural food products, particularly wheat production. However, self-sufficiency can contribute to food security only if it is in coincidences with comparative advantage and sustainable resourc...

With the widespread use of e-business coupled with the public’s awareness of data privacy issues and recent database security related legislations, incorporating security features into modern database products has become an increasingly important topic. Several database vendors already offer integrated solutions that provide data privacy within existing products. However, treating security and ...

Providing banking services, especially online banking and electronic payment systems, has always been associated with high concerns about security risks. In this paper, customer authentication for their transactions in electronic banking has been discussed, and a more appropriate way of using biometric fingerprint data, as well as encrypting those data in a different way, has been suggest...

The new millennium has brought about an increase in the use of business intelligence and knowledge management systems. The very foundations of these systems are the multitude of source databases that store the data. The ability to derive information from these databases is brought about by means of data integration. With the current emphasis on security in all walks of information and communica...

Detecting security aws is important in order to keep the database secure. A security aw in object-oriented databases means that a user can infer the result of an unpermitted method only from permitted methods. Although a database management system enforces access control by an authorization, security aws can occur under the authorization. The main aim of this paper is to show an e cient decisio...

A design environment for security critical database applications that should be implemented by using multilevel technology is proposed. For this purpose, the Entity-Relationship model is extended to capture security semantics. Important security semantics are defined and a language to express them in an ER model by means of security constraints is developed. The main contribution consists of th...

With the growing use of data in all aspects of government and commerce, the need for that data to be both accessible and secure is also growing. One solution to this dual need is provided by Accumulo, a database that allows multiple users of various security levels to access one platform but receive authorization to view only portions of the database. Various databases, however, organize inform...

In this paper, we first define a logical theory representing an XML database supporting XPath as query language and XUpdate as modification language. We then extend our theory with predicates allowing us to specify the security policy protecting the database. The security policy includes rules addressing the read and write privileges. We propose axioms to derive the database view each user is p...