Methods and arrangements for managing user access to a graph database. Nodes are
represented in a graph, along with edges which interconnect the nodes. One or more facts …

Security-Aware Query Processing is the problem of computing answers to queries in the
presence of access control policies. We present general impossibility results for the …

The extensible Markup Language (XML) has wide usage in healthcare to facilitate health
information exchange via the Continuity of Care Record (CCR) for storing/managing patient …

Abstract The Internet of Things (IoT) provides advanced services by interconnecting a huge
number of heterogeneous smart things (virtual or physical devices) through existing …

In this paper, we present an approach to instrument a Simple Protocol And RDF Query
Language query rewriting algorithm enforcing privacy preferences. The term instrument is …

RDF is an increasingly used framework for describing Web resources, including sensitive
and confidential resources. In this context, we need an expressive language to query RDF …

In this paper, we ask whether XML access control can be supported when underlying (XML
or relational) storage system does not provide adequate security features and propose three …

We study the problem of updating XML repository through security views. Users are
provided with the view of the repository schema they are entitled to see. They write update …

Ensuring the security of electronic data has morphed into one of the most important
requirements in domains such as health care, where the eXtensible Markup Language …

By specifying a fine-grained access control on the XML data, an accessibility map is
required to determine the accessibility of XML nodes for a specific subject (eg user or role) …