<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><div>As soon as one remembers that, if one is preserving the RepInfo, then it can be viewed as an example of Content Info, and all the concepts apply. In particular the CDO, in this case the DO of the RepInfo, should have PDI.</div><div><br></div><div>..David</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Samsung Galaxy smartphone.</div></div><div><br></div><div style="font-size:100%;color:#000000"><!-- originalMessage --><div>-------- Original message --------</div><div>From: Mark Conrad <mark.conrad@nara.gov> </div><div>Date: 02/04/2019 22:35 (GMT+00:00) </div><div>To: MOIMS-Data Archive Interoperability <moims-dai@mailman.ccsds.org> </div><div>Subject: Re: [Moims-dai] FW: CDO text </div><div><br></div></div><div dir="ltr">Before the change you had to provide PDI for the Content Data Object and the Representation Information. Now you only have to provide PDI for the CDO. How is that better? more complete?<div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Mark Conrad<br>NARA Information Services</div>
<div>Systems Engineering Division (IT)<br>The National Archives and Records Administration<br>Erma Ora Byrd
Conference and Learning Center<br>Building 494, Room 225<br>610 State Route
956<br>Rocket Center, WV 26726<br><br>Phone: 304-726-7820<br>Fax:
304-726-7802<br>Email: <a href="mailto:mark.conrad@nara.gov" target="_blank">mark.conrad@nara.gov</a> <br><br></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 2, 2019 at 5:22 PM david <<a href="mailto:david@giaretta.org">david@giaretta.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div>Not the way I, and others, read the changes.</div><div>David</div><div><br></div><div><br></div><div><br></div><div id="gmail-m_8290104464136462765composer_signature"><div style="font-size:85%;color:rgb(87,87,87)" dir="auto">Sent from my Samsung Galaxy smartphone.</div></div><div><br></div><div style="font-size:100%;color:rgb(0,0,0)"><div>-------- Original message --------</div><div>From: Mark Conrad <<a href="mailto:mark.conrad@nara.gov" target="_blank">mark.conrad@nara.gov</a>> </div><div>Date: 02/04/2019 22:17 (GMT+00:00) </div><div>To: MOIMS-Data Archive Interoperability <<a href="mailto:moims-dai@mailman.ccsds.org" target="_blank">moims-dai@mailman.ccsds.org</a>> </div><div>Subject: Re: [Moims-dai] FW: CDO text </div><div><br></div></div><div dir="ltr">"
As I pointed out in the Skype call, surely the Archive does indeed need to preserve things like Fixity Information, otherwise how could the Archive provide evidence that the CDO has not changed from what the Producer provided or to what the CDO may be Transformed into at some point."<div>-Agree</div><div><br></div><div>" Without the change it is possible to think that OAIS has nothing clear to say about preserving such things."</div><div><br></div><div>-Disagree. The suggested change to have PDI (including Fixity) apply only to the CDO rather than all of the Content Information actually makes it less clear about what PDI (including Fixity) should be preserved. The change requires less PDI rather than more to be preserved.</div><div><br></div><div> <br></div><div><div><div><div dir="ltr" class="gmail-m_8290104464136462765gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Mark Conrad<br>NARA Information Services</div>
<div>Systems Engineering Division (IT)<br>The National Archives and Records Administration<br>Erma Ora Byrd
Conference and Learning Center<br>Building 494, Room 225<br>610 State Route
956<br>Rocket Center, WV 26726<br><br>Phone: 304-726-7820<br>Fax:
304-726-7802<br>Email: <a href="mailto:mark.conrad@nara.gov" target="_blank">mark.conrad@nara.gov</a> <br><br></div></div></div></div></div></div></div></div></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 2, 2019 at 4:57 PM David Giaretta <<a href="mailto:david@giaretta.org" target="_blank">david@giaretta.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-GB"><div class="gmail-m_8290104464136462765gmail-m_-7125781441146979417WordSection1"><p class="MsoNormal"><span>Hi Don<u></u><u></u></span></p><p class="MsoNormal"><span><u></u> <u></u></span></p><p class="MsoNormal"><span>Without wanting to open up the extremely voluminous email exchange that we had last year off-list, I cannot resist responding to your last paragraph, which you write as if the aim is bad!<u></u><u></u></span></p><p class="MsoNormal"><span><u></u> <u></u></span></p><p class="MsoNormal"><span>I, and others, want to make the change so that it becomes extremely clear how an Archive should preserve, for example, Fixity Information, if the Archive chooses to preserve it. As I pointed out in the Skype call, surely the Archive does indeed need to preserve things like Fixity Information, otherwise how could the Archive provide evidence that the CDO has not changed from what the Producer provided or to what the CDO may be Transformed into at some point. Without the change it is possible to think that OAIS has nothing clear to say about preserving such things. All pretty useful things.<u></u><u></u></span></p><p class="MsoNormal"><span><u></u> <u></u></span></p><p class="MsoNormal"><span>Regards<u></u><u></u></span></p><p class="MsoNormal"><span><u></u> <u></u></span></p><p class="MsoNormal"><span>..David<u></u><u></u></span></p><p class="MsoNormal"><span><u></u> <u></u></span></p><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm"><p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> MOIMS-DAI <<a href="mailto:moims-dai-bounces@mailman.ccsds.org" target="_blank">moims-dai-bounces@mailman.ccsds.org</a>> <b>On Behalf Of </b>D or C Sawyer<br><b>Sent:</b> 02 April 2019 19:47<br><b>To:</b> MOIMS DAI List <<a href="mailto:moims-dai@mailman.ccsds.org" target="_blank">moims-dai@mailman.ccsds.org</a>><br><b>Subject:</b> Re: [Moims-dai] FW: CDO text<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Hi David,<u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">There is no valid reason to change the Content Information definition from ‘<span style="color:rgb(255,38,0)">the original target of preservation’</span> to ‘<span style="color:rgb(255,38,0)">a target of preservation</span>’. This has been there from the beginning to make clear it is referring to the original information provided by the Producer and not just any information within the Archive. This is important to ensure that when people are discussing preservation within an OAIS context, everyone understands this is the information originally provided by the Producer. <u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Of course we understand why you want to make this change because you still want to move Content Information to being ANY information in the Archive so you can claim the whole process is recursive by definition ‘and been there from the beginning'. This would be a radical, ambiguity enhancing, change to the long standing common understanding of the OAIS information and functional modeling. For these reasons this proposed change should be thoroughly rejected by the group.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Cheers-<u></u><u></u></p></div><div><p class="MsoNormal">Don<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><div><p class="MsoNormal"><br><br><u></u><u></u></p><blockquote style="margin-top:5pt;margin-bottom:5pt"><div><p class="MsoNormal">On Apr 2, 2019, at 10:06 AM, David Giaretta <<a href="mailto:david@giaretta.org" target="_blank">david@giaretta.org</a>> wrote:<u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm"><div><p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><span lang="EN-US"> </span></span><span lang="EN-US">David Giaretta <<a href="mailto:david@giaretta.org" target="_blank"><span style="color:rgb(149,79,114)">david@giaretta.org</span></a>><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span><br><b>Sent:</b><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span>02 April 2019 13:12<br><b>To:</b><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span>'Mark Conrad' <<a href="mailto:mark.conrad@nara.gov" target="_blank"><span style="color:rgb(149,79,114)">mark.conrad@nara.gov</span></a>>; 'John Garrett' <<a href="mailto:garrett@his.com" target="_blank"><span style="color:rgb(149,79,114)">garrett@his.com</span></a>><br><b>Subject:</b><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span>CDO text</span><u></u><u></u></p></div></div></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">My suggestions for the additional text:<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Change in current draft from:<u></u><u></u></p></div><div style="margin-left:18pt"><p class="MsoNormal"><b>Preservation Description Information (PDI</b>): The<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><b> </b></span>information, which along with Representation Information, is necessary for adequate preservation of the Content Data Object and which can be categorized as Provenance Information, Context Information, Reference Information, Fixity Information, and Access Rights Information.<u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal">Note: Defining PDI (as well as its components - Provenance Information, Context Information, Reference Information, Fixity Information, and Access Rights Information) as relevant to the Content Data Object does not mean that those concerns are any less important for other data objects or at other levels, for example, it is important to apply reference, fixity, provenance, context and access rights to Representation Information, or to any other information the Archive is preserving. Definition of these terms as relevant to the Content Data Object is simply to ease discussion of these concepts at the Content Data Object level.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">To:<u></u><u></u></p></div><div style="margin-left:18pt"><p class="MsoNormal"><b>Preservation Description Information (PDI</b>): The<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><b> </b></span>information, which along with Representation Information, is necessary for adequate preservation of the Content Data Object and which can be categorized as Provenance Information, Context Information, Reference Information, Fixity Information, and Access Rights Information.<u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal">Note: Defining PDI (as well as its components - Provenance Information, Context Information, Reference Information, Fixity Information, and Access Rights Information) as relevant to the Content Data Object does not mean that those concerns are any less important for other data objects or at other levels, for example, it is important to apply reference, fixity, provenance, context and access rights to Representation Information, or to any other information the Archive is preserving.<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span><s><span style="color:red">Definition of these terms as relevant to the Content Data Object is simply to ease discussion of these concepts at the Content Data Object level.</span></s><u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">I suggest deleting the last sentence because it does not make sense to me.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Change<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal"><b>Content Information</b>:<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><b> </b></span><span style="letter-spacing:-0.2pt">A set of information that is the original target of preservation. It is an Information Object composed of its Content Data Object and its Representation Information.</span><u></u><u></u></p></div><div><p class="MsoNormal">To<u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal"><b>Content Information</b>:<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><b> </b></span><span style="letter-spacing:-0.2pt">A set of information that is<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span><span style="color:red">a</span><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span><s><span style="color:red">the original</span></s><span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"><span style="color:red"> </span></span>target of preservation. It is an Information Object composed of its Content Data Object and its Representation Information.</span><u></u><u></u></p></div><div><p class="MsoNormal">There are a few other places the change “the original” to “a” would also be needed.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Add to the end of section 4.2.1.4 Taxonomy of Information Object Classes Used by OAIS<u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal"><span style="color:red">Content Information is any Information Object which is being preserved by the Archive.<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span></span><u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal"><span style="color:red"> </span><u></u><u></u></p></div><div><p class="MsoNormal">I don’t know an easy way to put this into the UML diagram.<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">Also add the end of section 4.2.1.4.1 Content Information:<span class="gmail-m_8290104464136462765gmail-m_-7125781441146979417apple-converted-space"> </span><u></u><u></u></p></div><div style="margin-left:36pt"><p class="MsoNormal"><span style="color:red">Any Information Object being preserved by the Archive, such as Representation Information, PDI etc., may also be considered to be Content Information.</span><u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal">..David<u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><div><p class="MsoNormal"> <u></u><u></u></p></div><p class="MsoNormal"><span style="font-size:9pt;font-family:Helvetica,sans-serif">_______________________________________________<br>MOIMS-DAI mailing list<br></span><a href="mailto:MOIMS-DAI@mailman.ccsds.org" target="_blank"><span style="font-size:9pt;font-family:Helvetica,sans-serif;color:rgb(149,79,114)">MOIMS-DAI@mailman.ccsds.org</span></a><span style="font-size:9pt;font-family:Helvetica,sans-serif"><br></span><a href="https://mailman.ccsds.org/cgi-bin/mailman/listinfo/moims-dai" target="_blank"><span style="font-size:9pt;font-family:Helvetica,sans-serif;color:rgb(149,79,114)">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/moims-dai</span></a><u></u><u></u></p></div></blockquote></div><p class="MsoNormal"><u></u> <u></u></p></div></div></div>_______________________________________________<br>
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