Modified Query-Roles Based Access Control Model (Q-RBAC) for Interactive Access of Ontology Data

Abstract

The data access model plays an important role during accessing and querying the stored data from the database. It provides an access right and authorization of accessing data into a database. It can distinguish the access boundaries between the administrators and the users where the database administrators can create certain policies either from the client application side or directly from the database side, depending upon the nature of running application. However, the emerging technology on the ontology repository has forced some database developers to adapt most of the access policies from the traditional database system and many of the policies were inherited from the relational database. This method of adopting or borrowing access policies from other storage system has created an unnecessary layer between the ontology repository and database. Most of the emerging ontology repositories lack an independent access model that provides or distinguishes access right between the administrators and users or between the ontology data. This paper proposed the improved access layer from the ontology repository with an additional users’ policy creation layer that will lead to increase data security and also increase the performance of querying data. Our effort relies on re-modifying the role based access control model from the traditional one to the new proposed model that organized by the rich users’ policies and perfect query rewriting layer. Although it is associated with query module, the proposed model has an additional security layer to restrict unauthorized users from accessing stored data in order to improve querying and data access performance

Keywords: Access methods, Access control, Rule based access control model. Oracle NoSQL database, Virtual data layer, Ontology Query.