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XQuery Kick Start by Vaidyanathan Nagarajan, James Linn, Kurt Cagle, Per Bothner, James McGovern

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Chapter 3. XQuery Language Expressions

by Kurt Cagle

The Need for XQuery

When you combine XML, which is essentially an open data format independent of any specific data-formatting language, with a universal addressing mechanism such as URLs, great things happen. These two factors together make the endpoints of a transaction transparent to the kind of technologies that are on the other ends.

However, this transparency can break down in the presence of databases. Even if a database has an XML-based interface (either ...

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