[DDI-users] DDI schema 2.1 (Winona Salesky)

[Mark R. Diggory]

I would like to add that for some of us w3c schema is a necessity. 
Having a correct schema version of the DDI is paramount. So any obvious 
error will be will be handled expeditiously. I will add this on to the 
other formatting tag corrections we will be resolving this week.

I do clearly see the problem, in the DTD:

> <!ELEMENT valrng  ((range | item)+, key?, notes*)                       >
> <!ATTLIST valrng
>       %a.global;   

was translated in creating the schema to the following, clearly an error:

> <xs:complexType name="valrngType">
>         <xs:sequence>
>             <xs:element name="range" type="rangeType" 
> maxOccurs="unbounded"/>
>             <xs:element name="item" type="itemType" 
> maxOccurs="unbounded"/>
>             <xs:element name="key" type="keyType" minOccurs="0"/>
>             <xs:element name="notes" type="notesType" minOccurs="0" 
> maxOccurs="unbounded"/>
>         </xs:sequence>
>         <xs:attributeGroup ref="GLOBALS"/>
>     </xs:complexType>

... more logically, it should look like this:

>     <xs:complexType name="valrngType">
>         <xs:sequence>
>             <xs:choice minOccurs="1" maxOccurs="unbounded">
>                 <xs:element name="item" type="itemType" minOccurs="0" 
> maxOccurs="1"/>
>                 <xs:element name="range" type="rangeType" 
> minOccurs="0" maxOccurs="1"/>
>             </xs:choice>
>             <xs:element name="key" type="keyType" minOccurs="0"/>
>             <xs:element name="notes" type="notesType" minOccurs="0" 
> maxOccurs="unbounded"/>
>         </xs:sequence>
>         <xs:attributeGroup ref="GLOBALS"/>
>     </xs:complexType>

I see this error as well for invalrng as well, I can make these 
modifications in the schema maintained on our sourceforge site.

-Mark Diggory
Harvard MIT Data Center

Sanda Ionescu wrote:

>Hi, Winona.
>To cut a long story short, the DDI schema(s) on our site, irrespective
>of version, are known to contain errors. We have fixed some as we found
>them, but there may be others that we are not aware of.
>Therefore it is best to continue to use the DTDs (which are correct) for
>document creation and validation.
>Good luck, and let me know if you have questions.
>Sanda.
>
>
>-----Original Message-----
>From: ddi-users-bounces at icpsr.umich.edu
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>To: ddi-users at icpsr.umich.edu
>Subject: DDI-users Digest, Vol 21, Issue 2
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>Today's Topics:
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>   1. DDI schema 2.1 (Winona Salesky)
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>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Fri, 13 Jan 2006 10:15:45 -0500
>From: "Winona Salesky" <wmeltzer at Princeton.EDU>
>Subject: [DDI-users] DDI schema 2.1
>To: <ddi-users at icpsr.umich.edu>
>Message-ID: <200601131514.k0DFEGWg025727 at smtpserver1.Princeton.EDU>
>Content-Type: text/plain; charset="us-ascii"
>
>Hi,
>
>Is anybody using the DDI schema 2.1? We are moving our files over from
>DTD
>to schema and I have run into a very odd validation error. In our
>variable
>description we frequently use <valrng>, according to the example in the
>tag
>library we are using this correctly:
>
> 
>
><valrng><range min="1" max="3" /></valrng>
>
> 
>
>However, the above example doesn't validate, because <range> and <item>
>are
>both mandatory tags in <valrng>. In order to make the above validate I
>would
>need to include an <item> tag:
>
> 
>
><valrng><range min="1" max="3" /><item VALUE="1"/></valrng>
> 
>This second example validates just fine, but seems redundant, what is
>the
>point of having a range if you need to specify the individual values. Is
>this a mistake in the schema? Am I misusing these tags?
> 
>Any help is appreciated.
>Thanks,
> 
>-Winona Salesky
>Applications Delivery Specialist
>wmeltzer at princeton.edu
>CPANDA [www.cpanda.org]
>Princeton University Library
> 
>
> 
>
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