Introduction to XML

This chapter isn't meant to provide a comprehensive study of XML (Extensible Markup Language). However, we'll look at the basic components of an XML document, which will aid our study of the usage of XML in the context of WebLogic Server. If you're already familiar with the structure of an XML document, you may skip this section and move along to the next section of this chapter.

The Standard Generalized Markup Language (SGML), defined in the ISO standard 8879:1986, outlines the process for data interchange between different subsystems that makes it structured and consistent. You should be familiar with one type of an SGML document: an HTML document. HTML is a subset of SGML. As you might already know, an HTML document is ...

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