XML Demystified

54
XML Demystifi ed
Next you must reference the DTD file in the XML document. You do this with
the tag, as you’ll recall from Chapter 3. We illustrate this in the
update of the XML document that follows. The parser reads the customers.dtd file
when it encounters the tag in the XML document to learn about the
tags before processing the XML document.
Mary
Smith
Now let’s take a look at how you use the XML schema in place of the DTD. You
use the XML schema language to create the XML schema. Each statement of an
XLM schema begins with