a question about XML schema and XML (newbie)

[raminaa niilian]

Hi
Thank you for reading my post.
I am learning XSD and xml from w3cscholl and i can not understand some of it. can you please look at this xml and xsd and answer my questions?

<?xml version="1.0"?>
 
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.w3schools.com"
xmlns="http://www.w3schools.com"
elementFormDefault="qualified">
....
......
</xs:schema>

in the above we see both targetNamespace and xmlns, what are they and why they appear in XSD?


Thanks.

[Paul Clapham]

First of all, do you know what namespaces are used for in XML and how they are commonly used? Probably not, most people don't really understand them. So I would suggest you read a tutorial about namespaces. I am not impressed by the w3schools tutorial, they are quite superficial. The namespace tutorial at zvon.org is more thorough.

When you have done that, I found this paper on how to use namespaces in schemas that looks like it goes through how to configure things quite well.