ID and #REQUIRED or #IMPLIED

[Anup Batra]

Hi all,
I have one question. When attribute_type is ID then #REQUIRED or #IMPLIED can be used as default. If suppose I have an element which appears more than once but without the ID value explicitly supplied (since IMPLIED will work here )then how could I refer to a particular element instance as there is no mean (ID value) with me to distinguish.
Can anyone explain me what XML do in this kind of situation.
Anup Batra

[Luciano Queiroz]

You have to refer to this element by some attribute value. Otherwise, it will be treated equally as all other elements with the same name.

[Anup Batra]

“You have to refer to this element by some attribute value. Otherwise, it will be treated equally as all other elements with the same name.”
Actually I want to ask about the uniqueness of the Attribute_Type ID here. What will be the value of att ID.
Anup Batra

[Rakesh Gudur]

Anup,
In this case if you want to refer to a particular element, then it is not possible. You can either loop through and handle the element you want to treat or compare with the element's content.
It's rather a design issue. You need to have an ID attribute in case you want to refer to an element specifically. It is like database referential integrity (PK).
Hope this helps,
Rakesh.