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Minor comment in http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2008Mar/0001.html Appendix C: If I've understood things correctly, the presence of the reference in the instance document cannot have any impact on model validation, since, as is emphasised in the text, the schema doc. involved contains none of the SML attributes which would provoke reference checking, right? If so, please call this out. If not, please clarify!
Even if no SML constraints are defined in the schema, the references in instance documents will be checked for the following 4.2.1 At Most One Target Every non-null SML reference MUST target at most one element in a model. A recognized reference scheme in an SML reference MUST NOT resolve to more than one target. 4.2.2 Consistent References If a non-null SML reference contains multiple reference schemes, all recognized reference schemes MUST resolve to the same target or they all MUST be unresolved. This should be clarified in the text of the appendix
resolution (3/13 conf call): mark editorial. Editors to fix per comment# 1 and then mark as needsReview
The SML WG agrees with the suggestion. We will change the text as suggested. I'm changing its status accordingly. The change in status should cause email to be sent to the originator of this issue, to whom the following request is addressed. Please review the resolution and let us know if you agree with it by adding a comment to the issue record. If we do not hear from you in the next two weeks, we will assume you agree with the WG decision.
resolution (6/5/08 conf call): remove the decided keyword
Added the following paragraph in Appendix C: Note that, there are no SML constraints defined on the EnrolledCourse element or on the type of that element in the schema. Therefore, even if the first EnrolledCourse element instance is marked as an SML reference, no SML constraints are evaluated for that element during model validation. However, checks such as the ones defined in section 4.2.1 At Most One Target and section 4.2.2 Consistent References are still performed on that SML reference during model validation.
SML WG approves Comment #5
I'm happy that the additional text in Appendix C removes the apparent contradiction.