Chapter 7. Understanding XML
In this hour, you will learn about the need for XML. In the beginning, you will learn a little about the rules of grammar that govern XML. You will learn how XML namespaces can guarantee that there won’t be any duplicate tag names in your document. Next, we will show you how you can be sure that the documents you receive are correct. In this hour, you will learn
Why XML is needed
The rules for creating an XML document
Avoiding naming conflicts
How to validate that the document is correct
Understanding Why We Need XML
Most knowledge workers like technology only when it solves a problem that is vexing them. Before launching into a discussion of the details, we should first pause and ask ourselves why we need XML anyway.