DTD is described in XML 1.0 standard. In this tutorial basic DTD features are demonstrated on many examples which can be downloaded for off-line use.

This tutorial will show you the different methods of retrieving XML from SQL Server, how to control how the data is returned, and then discuss how to navigate through the returned results. You will also learn ways of viewing SQL Server tables from an XML perspective. From there you’ll learn how to load data into SQL Server using XML natively, including real-time over HTTP.

In this tutorial, selected XML features are demonstrated on many examples which can be downloaded for off-line use.

XLink, an XML-related specification, lets you achieve dramatic linking effects in your XML documents. In this short tip learn how to include parts of other XML documents in your own XML through XLink. The code example demonstrates the technique.

The Darwin Information Typing Architecture (DITA) is an XML-based architecture for authoring, producing, and delivering technical information. This article introduces the architecture, which sets forth a set of design principles for creating information-typed modules at a topic level, and for using that content in delivery modes such as online help and product support portals on the Web. This article serves as a roadmap to DITA: what it is and how it applies to technical documentation. The article also links to representative source code.