4.1. XML Overview
While you may already be familiar with XML, it is important to understand XML concepts from the point of view of applications handling XML documents. With this knowledge, you are in a better position to judge the impact of your design decisions on the implementation and performance of your XML-based applications.
Essentially, XML is a markup language that enables hierarchical data content extrapolated from programming language data structures to be represented as a marked-up text document. As a markup language, XML uses tags to mark pieces of data. Each tag attempts to assign meaning to the data associated with it; that is, transform the data into information. If you know SGML (Standard Generalized Markup Language) and HTML ...
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