The paper investigates XML document speci cations with DTDs and integrity constraints, such as keysand foreign keys. We study the consistency problem of checking whether a given s...
We present a system for efficient indexed querying of XML documents, enhanced with sibling operations. R-tree index proposed in [5] has a very high cost for the following-sibling...
In this paper we address an issue common in the frame of WWW, namely information entities that present di erent facets under di erent contexts (or worlds). Handling such multifacet...