A number of techniques have been developed to facilitate powerful data retrieval on the
Web and Semantic Web. Three categories of Web query languages can be distinguished …

Different dialects of XML have emerged as ubiquitous document exchange formats. For
effective collaboration based on such documents, the capability to propagate edit operations …

XML access control requires the enforcement of highly expressive access control policies to
support schema-, document and object-specific protection requirements. Access control …

In this paper, we define a security model for a native XML database which supports the
Xupdate language. Our model is inspired by the SQL security model which is the most …

With the emergence of XML as the de facto standard to exchange and disseminate
information, the problem of regulating access to XML documents has attracted a …

In this paper, we first define a logical theory representing an XML database supporting X
Path as query language and X Update as modification language. We then extend our theory …

We developed three different rule-based systems, each designed to take XML as input and
produce XML as output and manipulate intermediate facts as XML. They use very different …

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 …

Several proposals for updating XML have been introduced. Many of them have a rather
complicated semantics due to the interaction of side-effects and updates, and some …

Various query languages for Web and Semantic Web data, both for practical use and as an
area of research in the scientific community, have emerged in recent years. At the same …