how to make include element in my own XML schema?

Question

I have writen my own xml schema and one large xml file that is an instance of that schema. Now I would like to define include element in my xsd so that xml file can be made out of several smaller units. How do I do that?
For example in my file I have

<item>1</item>
<item>2</item>
<item>3</item>
<include src='foo.xml'>

and foo.xml has content:

<item>4</item>
<item>5</item>
<item>6</item>

and together they make needed set of values. Thanks ahead :)

Answer 1

XML is just a data representation and structuring format. If you need "include"-type functionality, you have to implement that in whatever you are using to process the XML. Maybe if you provided a little more context on what you're trying to accomplish (by editing your original question) we could help you.