<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none"><!--P{margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>In DDI-Lifecycle 3.2 all elements which are instances of <br>
<br>
{ddi:reusable:3_2}AbstractIdentifiableType<br>
<br>
can have either URN or Agency/ID/Version sequence or both.<br>
If the element has both, the field-level specification<br>
<br>
http://www.ddialliance.org/Specification/DDI-Lifecycle/3.2/XMLSchema/FieldLevelDocumentation/schemas/reusable_xsd/complexTypes/AbstractIdentifiableType.html<br>
<br>
states that<br>
<br>
"If both URN and the identification sequence is used, <br>
and there is any conflict, the URN takes precedence. "<br>
<br>
The meaning of "taking precedence" is, to me at least, somewhat unclear.<br>
Consider, for instance, the following XML document which is valid<br>
with respect to the DDI-Lifecycle 3.2 XML Schema:<br>
<br>
---8<---8<---8<---<br>
<?xml version="1.0" encoding="utf-8"?><br>
<ddi:DDIInstance <br>
xmlns:ddi="ddi:instance:3_2" <br>
xmlns:r="ddi:reusable:3_2" <br>
><br>
<br>
<r:URN>urn:ddi:acme.org:another_ddi_instance:2</r:URN><br>
<r:Agency>acme.org</r:Agency><br>
<r:ID>ddi_instance</r:ID><br>
<r:Version>1</r:Version><br>
<br>
</ddi:DDIInstance><br>
---8<---8<---8<---<br>
<br>
In the document above, the URN and the Agency/ID/Version sequence <br>
are conflicting. According to the field-level specification, in such<br>
a case the URN takes precedence. <br>
<br>
My question is then:<br>
<br>
Since URN takes precedence, does this mean that the <ddi:DDIInstance><br>
element is known only as "urn:ddi:acme.org:another_ddi_instance:2"?<br>
<br>
In other words, is the above document equivalent to the document below?<br>
<br>
---8<---8<---8<---<br>
<?xml version="1.0" encoding="utf-8"?><br>
<ddi:DDIInstance <br>
xmlns:ddi="ddi:instance:3_2" <br>
xmlns:r="ddi:reusable:3_2" <br>
><br>
<r:URN>urn:ddi:acme.org:another_ddi_instance:2</r:URN><br>
</ddi:DDIInstance><br>
---8<---8<---8<---<br>
</p>
<p><br>
</p>
</div>
</body>
</html>