hello

I have a few Questions:

1. is there a way to make element optional?

2. I am writing this line:
     <xs:element name="etd">
and I want to give an option that the element will be ok either in the xml file it will be written "etd" or "ETD". how can I do it?

thank you
kfir

1. Use minOccurs="0"

2. Use
   <xs:choice>
     <xs:element name="etd"/>
     <xs:element name="ETD"/>
   </xs:choice>

but this seems like a very poor design - XML is case-sensitive, and by allowing both you are making extra work for everyone who has to process the XML document.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

how do I make complex type optional?

kfir

The elements and attributes within a complex type can be optional, but the type itself can't (it doesn't make sense). To make an element optional, use minOccurs="0". To make an attribute optional, write use="optional".

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference