Restricting XML Elements Based on Another Element via XSD

Question

I believe this has to do with keyref but I\'m not for sure, and I am really not sure that it can be done at all.

For example, say I have myElement1 and

Answer 1

What I would suggest is to create XSD for each cases defined below:

Cases like:

1. Validating Element depending on the value or presence of any other element/attribute.
2. Validating value of an element depending on the value or presence of any other element/attribute.
3. Validating attribute depending on the value or presence of any other element/attribute.
4. Ignoring (random) elements/attributes from validation isn't allowed. (I mean to say is usage of has restrictions.)
5. Elements/attributes of same name having different DataTypes.
6. Validating child elements on the basis of value or presence of any other Elements/Attributes.

And create there own XML for that.