Required Information Set Items and Properties

Reference - http://www.w3.org/TR/2000/CR-xmlschema-1-20001024/#infoset

<snip>
This specification requires as a precondition for assessment an information
set as defined in [XML-Infoset] which supports at least the following
information items and properties:

Attribute Information Item
[local name], [namespace URI], [normalized value]
Character Information Item
[character code]
Element Information Item
[local name], [namespace URI], [children], [attributes], [in-scope
namespaces] or [declared namespaces]
Namespace Declaration Information Item
[prefix], [children]
</snip>


[parent] property of Element Information Item is required to validate
identity constraints.

Regards, Asir S Vedamuthu