Recursive SQL-like Query language for XML.
Mourad Ykhlef · 2007
Abstract. XML data are data which are not constrained by a schema, XML is fast emerging as a standard for data representation and exchange on the Word Wide Web, the ability to intelligently query XML data becomes increasingly important. In this paper we propose a recursive query language XRQL for querying and restructuring XML data. The expressive power of XRQL is comparable to Fixpoint. XRQL language is a multi-sorted SQL-like language integrating grouping, aggregate functions, recursion and nesting.