This paper presents an approach that uses special purpose RBAC constraints to base certain access control decisions on context information. In our approach a context constraint is...
Abstract. Access control for semi-structured data is nontrivial, as witnessed by the number of access control approaches in recent literature. Recently a case has been made for exp...
Pervasive computing environments have created a requirement for spatial- and temporal-aware access control systems. Although temporal, spatial and spatio-temporal role-based acces...
Abstract. Many researchers have investigated the problem of storing and querying XML documents using an RDBMS. Two situations are considered in this approach based on whether or no...
: The Extensible Markup Language (XML) is based on the concept of schema languages, which are used for validation of XML documents. In most cases, the metamodeling view of XML-base...