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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">This is the discussion I remember. Here is a use case.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">In the PDS4 Information Model we have the following hierarchy.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Bundle – A Bundle contains one or more Collections (E.g., a Bundle is typically a package containing a data product collection for a single instrument
together with one or more collections of information necessary for using the data. ) The PDS4 bundle is effectively an OAIS Information_Package.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Collection -> A Collection contains one or more Data Products of a single type (e.g., all the raw images from the Viking Orbiter 1 and 2 cameras)<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Data Products -> A Data Product containing data from a scientific observation. (e.g., one raw image from the Viking mission) The Raw image and its
PDS4 label is effectively an OAIS Information_Object.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Viewing PDS4 as an OAIS, if a user finds and requests a Viking Image from the PDS they will typically receive an Information Object, i.e., the raw image (Data
Object) and its Representation_Information. If the user then requests the Fixity Information for the raw image, under the OAIS-IF, how should system get the Data_Object’s Fixity_Information?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">According to the OAIS-IF Information Model the Fixity_Information is associated with the Preservation_Description_Information and the Preservation_Description_Information
is associated with an Information_Package. This suggest that given the Viking Image Information_Object, the system will navigate through the Collection to the Bundle (an Information_Package), get the Preservation_Description_Information, get the Fixity_Information,
and then locate and return the Fixity_Information specific to the Viking Image Information_Object.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Another view is that the system knows that the Viking Image Information_Object is Content_Information and directly gets the associated Fixity_Information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thoughts?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> MOIMS-DAI <moims-dai-bounces@mailman.ccsds.org>
<b>On Behalf Of </b>david<br>
<b>Sent:</b> Wednesday, June 12, 2019 11:59 AM<br>
<b>To:</b> MOIMS-Data Archive Interoperability <moims-dai@mailman.ccsds.org><br>
<b>Cc:</b> Hughes, John S (398B) <john.s.hughes@jpl.nasa.gov><br>
<b>Subject:</b> [EXTERNAL] Re: [Moims-dai] Architecture Description<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yes, necessary, but not sufficient.<o:p></o:p></p>
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<p class="MsoNormal">David<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:#575757">Sent from my Samsung Galaxy smartphone.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="color:black">-------- Original message --------<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">From: Mark Conrad <<a href="mailto:mark.conrad@nara.gov">mark.conrad@nara.gov</a>>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Date: 12/06/2019 19:15 (GMT+00:00)
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">To: MOIMS-Data Archive Interoperability <<a href="mailto:moims-dai@mailman.ccsds.org">moims-dai@mailman.ccsds.org</a>>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Cc: "Hughes, John S (398B)" <<a href="mailto:john.s.hughes@jpl.nasa.gov">john.s.hughes@jpl.nasa.gov</a>>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Subject: Re: [Moims-dai] Architecture Description
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal">"Preservation Description Information (PDI): The information, which along with Representation Information, is necessary for adequate preservation of the
<b><i>Content Data Object</i></b>"<br clear="all">
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Jun 12, 2019 at 1:38 PM David Giaretta <<a href="mailto:david@giaretta.org">david@giaretta.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">In OAIS terms PDI may be part of any Information Package. If the Information Package is an AIP then by implication the Information Object it will probably be
Content Information.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">..David<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> 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>Mark Conrad<br>
<b>Sent:</b> 12 June 2019 17:51<br>
<b>To:</b> MOIMS-Data Archive Interoperability <<a href="mailto:moims-dai@mailman.ccsds.org" target="_blank">moims-dai@mailman.ccsds.org</a>><br>
<b>Cc:</b> Hughes, John S (398B) <<a href="mailto:john.s.hughes@jpl.nasa.gov" target="_blank">john.s.hughes@jpl.nasa.gov</a>><br>
<b>Subject:</b> Re: [Moims-dai] Architecture Description<span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">"
<span style="color:black">I cannot understand why Content_Information (a sub-type of Information_Object) shows methods get/putPreservationDescriptionInformation. That would normally indicate that these are additional methods in addition to those which Information_Object
has – but why?</span> "<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Because PDI does not apply to all Information_Objects - only Content_Information.<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <br clear="all">
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Mark Conrad<br>
NARA Information Services<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span lang="EN-GB">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>
<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">On Tue, Jun 11, 2019 at 9:17 AM David Giaretta <<a href="mailto:david@giaretta.org" target="_blank">david@giaretta.org</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Hi Steve<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">I can understand why get/setDataObject and get/putRepresentationInformation are methods in Information_Object but I don’t understand why get/putInformationObjectMetadata
is there. Also don’t understand the difference between get/setPID and get/putIdentificationInformation. Also what is the difference between put and set?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">I cannot understand why Content_Information (a sub-type of Information_Object) shows methods get/putPreservationDescriptionInformation. That would normally indicate
that these are additional methods in addition to those which Information_Object has – but why?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Is there are mix-up between Information_Object and Information_Package?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">I suspect that part of my confusion arises from using the ontology rather than a UML tool to create the diagrams etc. but that would not explain my questions/comments
above.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">Regards<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">..David<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> 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>Hughes, John S (398B) via MOIMS-DAI<br>
<b>Sent:</b> 11 June 2019 03:16<br>
<b>To:</b> MOIMS-Data Archive Interoperability <<a href="mailto:moims-dai@mailman.ccsds.org" target="_blank">moims-dai@mailman.ccsds.org</a>><br>
<b>Cc:</b> Hughes, John S (398B) <<a href="mailto:john.s.hughes@jpl.nasa.gov" target="_blank">john.s.hughes@jpl.nasa.gov</a>><br>
<b>Subject:</b> [Moims-dai] Architecture Description<span lang="EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Hi all,</span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Attached please find the Model Specification Document (html format) and two diagrams with a few updates to some core classes. In particular the DPI get/put
methods have been moved to the Content_Information class as per recent discussions.</span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Thanks,</span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Steve</span><span lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><span lang="EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">_______________________________________________<br>
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<p class="MsoNormal">_______________________________________________<br>
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