This was laptop technological know-how normal from programming ANSI committee if I be aware appropriately. As it seems, programming W3C standard XQuery has exceeded SQL/XML and is now seen as programming most crucial syntax for expressing searches on XML. Oracle 10gR2 helps XQuery in full, allowing us programmers use so called FLOWR for, let, order, where, return expressions in Query statements. XQuery will always search via XML Documents; programming result will also always be XML, but in Oracle 10gR2 we can programming xmltable operator programmers have Oracle interpret programming XML query result fragment as an intermediate relational resultset. This is done in very much programming same way as programming table operator could have programming SQL engine use laptop science Collection nested table again from computer technological know-how PL/SQL characteristic as an intermediate result set. See post by Pete Finnigan: 06/29/2005: 10g Release 2 PL/SQL and SQL new points?ou wrote how it differs from what Arup shown.