This article is excerpted from Ajax for Web Application Developers, copyright 2007, published last month by Sams Publishing. Reprinted with permission, all rights ...

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XML structures vary widely in arrangement, complexity, and whether the data is held in content or attributes. A variation of this sample XML is used throughout this article.

An XML database. XML data is typically stored in a hierarchical layout along with a definition of its structure (see XML schema). See XML. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other ...

A database that stores XML documents. There are two types. The first is the "XML-enabled database," which is a relational or object-oriented database that has been extended to hold XML data. In this ...