The widespread adoption of XML holds out the promise that document structure can be
exploited to specify precise database queries. However, the user may have only a limited …

The prevalent use of XML highlights the need for a generic, flexible access-control
mechanism for XML documents that supports efficient and secure query access, without …

Abstract In the Database-As-a-Service (DAS) model, clients store their database contents at
servers belonging to potentially untrusted service providers. To maintain data confidentiality …

Access control for XML documents is a non-trivial topic, as can be witnessed from the
number of approaches presented in the literature. Trying to compare these, we discovered …

At present, most of the state-of-the-art solutions for XML access controls are either (1)
document-level access control techniques that are too limited to support fine-grained …

We study the problem of answering queries posed on virtual views of XML documents, a
problem commonly encountered when enforcing XML access control and integrating data …

The erosion of trust put in traditional database servers and in Database Service Providers,
the growing interest for different forms of data dissemination and the concern for protecting …

We investigate a generalization of the notion of XML security view introduced by Stoica and
Farkas [17] and later refined by Fan et al.[8]. The model consists of access control policies …

Today's organizations raise an increasing need for information sharing via on-demand
access. Information brokering systems (IBSs) have been proposed to connect large-scale …

An improved method and system for providing path-level access control to a structured
document in a collection stored in a database, where the structured document includes a …