The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
Abstract. We consider the problem of accurately estimating the number of approximate XML answers for a given query, and propose an efficient method that (1) accurately computes sel...
The XML data is order-sensitive. The order problem, that is how ordered XML documents and order-sensitive queries over it can be efficiently supported when mapped into the unorde...
Ling Wang, Song Wang, Brian Murphy, Elke A. Runden...
Supporting queries and modifications on XML documents is a challenging task, and several related approaches exist. When implementing query and modification languages efficientl...
: We present a grammar-based approach to specifying k-ary queries for XML documents. k-ary queries simultaneously locate k nodes of an input tree as specified by a given relation. ...