Basic message processing tasks, such as wellformedness checking and grammar validation, can be off-loaded from the service providers' own infrastructures. To enable effective...
With the rise of XML as a standard for representing business data, XML data warehouses appear as suitable solutions for Web-based decision-support applications. In this context, i...
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
Armstrong databases are a popular tool in example-based database design. An Armstrong database for a given constraint set from a fixed constraint class Z satisfies precisely those ...
Order-based queries over XML data include XPath navigation axes such as following-sibling and following. In this paper, we present holistic algorithms that evaluate such order-bas...
Zografoula Vagena, Nick Koudas, Divesh Srivastava,...