Attached you can find an example of inclusion of a schema and its redefinition.
I’ve read the W3C Schema recommendation but it’s not clear to me if include.xsd is a valid schema.
I’m trying to validate include.xml to see if include.xsd is a valid schema.
Most schema validators say it’s not valid (because a_type is being declared more than once), but a few of them say it’s OK.
Do you think include.xsd is a valid 1.0 schema?