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[mile] corrections to the SCI XML Schema

"Baker, Jon" <bakerj@mitre.org> Thu, 23 February 2012 15:25 UTC

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From: "Baker, Jon" <bakerj@mitre.org>
To: "mile@ietf.org" <mile@ietf.org>
Thread-Topic: corrections to the SCI XML Schema
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Date: Thu, 23 Feb 2012 15:25:03 +0000
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Subject: [mile] corrections to the SCI XML Schema
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Earlier this week I was working with the SCI XML Schema and noticed a few errors. 

First, in numerous places xsd:elements are declared using an element reference and also specifying an element name as follows:
<xsd:element name="Platform" ref="iodef-sci:Platform" minOccurs="0" maxOccurs="unbounded"/>

When declaring an xsd:element by a reference to another previously defined element, a @name cannot be specified. The correct definition should look like:
<xsd:element ref="iodef-sci:Platform" minOccurs="0" maxOccurs="unbounded"/>

Second, in the definition of the "XMLDATA" complex type the "dtype" attribute was improperly declared as follows:
<xsd:attribute name="dtype" type="iodef:dtype-type" use="prohibited" value="xml"/>

I believe that the intent was to set the value of the attribute to always be "xml" the proper way to do this is to use the @fixed attribute. A @value attribute is not defined on the xsd:attribute element. This type is defined as being a restriction on the iodef:ExtensionType and therefore it cannot have a @use attribute value other than "required". The attribute is defined and required in the base type. The correct declaration follows:
<xsd:attribute name="dtype" type="iodef:dtype-type" use="required" fixed="xml"/>

The attached .xsd has been revised to address these issues. 

Thanks,

Jon

============================================
Jonathan O. Baker
G022 - IA Industry Collaboration
The MITRE Corporation
Email: bakerj@mitre.org

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