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Re: Revised Holdings XML Schema v7

From: Johan Zeeman <joe.zeeman@tlcdelivers.com>
Date: Thu, 27 Sep 2001 17:44:18 -0400
Message-ID: <000901c1479d$901c83f0$9539910c@tlcdelivers.com>
To: Poul Henrik Jørgensen <PHJ@Portia.dk>, "Ray Denenberg \(E-mail\)" <rden@loc.gov>
Cc: "ZIG Listserver \(E-mail\)" <www-zig@w3.org>, "DanZIG list \(E-mail\)" <danzig@list.bibnet.dk>
I'm afraid I haven't looked at this proposal closely before, but now that I
have I need to say that I think it stems from a misunderstanding of the
Holdings Schema.

For those who haven't looked, the proposal says that "It is not possible to
express more than one level for a BibPart.  An example:  One BibPart is
volume 5, issue 2. You can only express volume 5 or issue 2 with version
1.1. And it is a normal requirement to have several levels to present for
one BibPart."

However, BibPart is recursively defined.  That is, one BibPart can contain
child BibParts.  The intention of this is that a BibPart describes itself at
its own level and contains its children at lower levels.  The example would,
therefore, be expressed as a BibPart for volume 5 containing a child BibPart
for issue 2.  Each of these parts may contain additional information
pertaining to itself.  It is thus not "a normal requirement to have several
levels to present for one BibPart".  The "normal requirement" is that a
BibPart at any level may have several child BibParts, each of which may have
children of their own.

The proposal suggests remedying the defect by adding two new elements to
BibPart:  childEnumeration and childChronology.  Since I don't believe there
is a defect, I don't think there is any need for a remedy.

J.

----- Original Message -----
From: "Poul Henrik Jørgensen" <PHJ@Portia.dk>
To: "Ray Denenberg (E-mail)" <rden@loc.gov>
Cc: "ZIG Listserver (E-mail)" <www-zig@w3.org>; "DanZIG list (E-mail)"
<danzig@list.bibnet.dk>
Sent: Wednesday, September 19, 2001 8:17 PM
Subject: Revised Holdings XML Schema v7


> To Ray Denenberg, LC
>
> I have now prepared a revised version of the Z39.50 Holdings XML Schema
> (HoldingsSchema7.xsd), that reflects the current proposed changes to the
> Holdings Abstract Schema.
>
> The revised Holdings XML Schema has been upgraded to comply with the
current
> W3C May 2001 Schema Language.
>
> Both the new version 7 XML Schema with corresponding annotated
documentation
> as well as the previous versions are available via the same URL, that is
> referenced from the Z39.50 Maintenance Agency Web:
> http://www.portia.dk/zholdings/
>
> Best regards,
> Poul Henrik Jørgensen, DBC
Received on Thursday, 27 September 2001 17:44:01 UTC

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