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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>See <span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>below</span><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> MOIMS-DAI <moims-dai-bounces@mailman.ccsds.org> <b>On Behalf Of </b>Mark Conrad<br><b>Sent:</b> 11 June 2018 22:04<br><b>To:</b> MOIMS-Data Archive Interoperability <moims-dai@mailman.ccsds.org><br><b>Subject:</b> Re: [Moims-dai] Action from MOIMS-DAI Webex 20180605<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>See comments <span style='color:red'>below.</span><o:p></o:p></p><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><p class=MsoNormal>Mark Conrad<br>NARA Information Services<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>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></p></div></div></div></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Jun 11, 2018 at 5:26 AM, david <<a href="mailto:david@giaretta.org" target="_blank">david@giaretta.org</a>> wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Action from <span class=gmail-m-6784099864281630584spelle>Webex</span> 20180605<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:47.3pt;text-indent:-18.0pt;mso-list:l4 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>David to write an example of the application of OAIS preservation concepts to components of PDI including illustration of Ingest and recursion.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>A Producer – in this case outside the OAIS <span style='color:red'>A Producer is a role that can be played by an internal or external source. However the role is always outside the OAIS. See Figure 2-1 and Section 2-1 "Outside the OAIS are Producers, Consumers, and Management."</span> – wishes to submit information to be preserved by the OAIS. Agreement has been reached on the procedures to be followed. The Producer prepares one or more SIPs which are transferred to the OAIS.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>Perhaps I should have made it clearer – in this case I am referring the entity which is playing the role of Producer is external to the OAIS. See the Glossary definition off Producer.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>A Receive Submission function receives the <span class=gmail-m-6784099864281630584grame>SIP, and</span> acknowledges the receipt or requests a re-submission if there is an error, for example as reported by Quality Assurance.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The SIP (or the collection of SIPs together) contains the Content Information (Data Object and Representation Information), plus PDI and may also provide Information Property Descriptions of Information Properties. <span style='color:red'>According to the current definition, Information Properties (Description?) is part of the Content Information.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The AIP is generated by a Generate AIP function from the SIP(s)<span style='color:red'> This is not specific enough to evaluate your proposal. What is in the SIPs? How are they transformed/mapped to produce the AIP?</span> with any additional Representation Information required <span style='color:red'>Isn't the additional Representation Information part of the AIP?</span>. I think that logically we can say that it may also produce Fixity Information<span style='color:red'> If you are forming an AIP this is required.</span>, as part of verifying the transfer or if some file format conversions have taken place. Additional Provenance should be created to record the fact that the information has been taken into the OAIS <span style='color:red'>Required if you are creating an AIP</span>. Some additional Context may be <span class=gmail-m-6784099864281630584grame>created <span style='color:red'>Required if you are making an AIP/</span></span> and Reference Information will also be created to allow the Content Information to be found. The Packaging Information will be determined by the structure of the AIP which the OAIS has decided to use. Note that an AIP is defined as a logical container.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The associated Descriptive Information is created by Generate Descriptive Information.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo2'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Coordinate Updates transfers the AIP to Archival Storage and the Descriptive Information to Data Management. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>All the above was taken more or less from OAIS itself, apologies if I have garbled it a little – check the standard.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>The OAIS will need to preserve the PDI. Let us see how the each of the components of PDI is preserved. Let us say that the Fixity is encoded as a hash code <span style='color:red'>Are you assuming all of the PDI is in a single file?</span>, <span style='color:red'>f</span>or example the Data for which is a sequence of bits which encode ASCII characters. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>No I am not assuming the PDI is a single file. The Fixity I am referring to in the above is the Fixity of the Content above, not the Fixity of the PDI, which I discuss below. <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>The following runs through a likely process, mapping it to the Ingest Functional Entity.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>A Producer – in this case inside the OAIS <span style='color:red'>No. </span><span style='font-size:12.0pt;color:red;background:white'>A Producer is a role that can be played by an internal or external source. However the role is always outside the OAIS. See Figure 2-1 and Section 2-1 "Outside the OAIS are Producers, Consumers, and Management."</span> – wishes to submit information to be preserved by the OAIS. Agreement has been reached on the internal procedures to be followed. The Producer prepares one or more SIPs which are transferred to the OAIS - in this case this is an internal transfer. <span style='color:red'>No. Producers are outside the OAIS so their submissions come from outside the OAIS.</span><o:p></o:p></p><p class=MsoNormal><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>Check the Glossary: </span><b><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>Producer</span></b><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>: The role played by those persons or client systems that provide the information to be preserved. This can include other OAISes or internal OAIS persons or systems.</span><span style='font-family:"Times New Roman",serif;color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo3'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>In this case the SIP would contain the hash code. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Representation Information will probably be the same for many examples of Fixity if the OAIS uses the same method for many pieces of data; for <span class=gmail-m-6784099864281630584grame>example</span> the RepInfo could be (1) Structure: ASCII code to go from bits (2) Semantic: SHA256 was used to create the hash. <span class=gmail-m-6784099864281630584grame>Therefore</span> there needs only to be a pointer to the RepInfo for the hash. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Provenance would be that this was created at a <span class=gmail-m-6784099864281630584grame>particular time, <span style='color:red'>who created it as part of what business proccess and what file the hash is associated with. </span></span>. The hash would have been created either by the external Producer or the OAIS. In the latter case one would only need to point to a single statement that the OAIS created the hash. <span style='color:red'>No. You also need to know when it was created and what business process included the generation of the hash value, what file it was generated from, etc.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>You need to read the sentences together. I had hoped to make it clear that there are likely to common features, such as the statement about who created the Provenance, and as you say, what the business process used was etc, and there will be something which is always specific, namely the time.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Reference Information provides the location where the hash may be retrieved – unique for each hash – surely each hash will have such a reference otherwise how can it be retrieved?<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Access Rights would again be the same for things that are being preserved – no-one <span class=gmail-m-6784099864281630584grame>is allowed to</span> alter the hash. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo4'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Context would be that the hash is created as part of the OAIS preservation functionality.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>All the things (RepInfo, Provenance creator, Access Rights, Context) which are the same for all, or lots of similar, things, could be contained in the documentation about the process. <span style='color:red'>What does this mean?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>It means that the process is documented, as the OAIS’s internal processes should be.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The Receive Submission (possibly different from the one used for SIPs from the external Producer) function receives the SIP, and acknowledges the receipt or requests a re-submission if there is an error, for example as reported by Quality Assurance. One might expect these may be taken care of by the normal computing infrastructure since it is an internal transfer. <span style='color:red'>No. All submissions are treated as external submissions. See Section 2.1.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>See the Glossary as noted above<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The SIP(s) contains the Content Information (Data Object and Representation Information), plus PDI and may also provide Information Property Descriptions of Information Properties. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The AIP is generated by a Generate AIP function from the SIP(s) with any additional Representation Information required.<span style='color:red'>You are not providing sufficient detail to evaluate your proposal. </span> Again the Generate AIP function may be different from the one used for information from n external Producer. It should also produce Fixity Information, as part of verifying the transfer or if some file format conversions have taken place. Additional Provenance should be created to record the fact that the information has been taken into the OAIS. Some additional Context may be <span class=gmail-m-6784099864281630584grame>created</span> and Reference Information will also be created to allow the Content Information to be found. <span style='color:red'>All the elements you have identified in the previous sentences are mandatory if you are generating an AIP.</span> The Packaging Information will be determined by the structure of the AIP which the OAIS has decided to use. Note that an AIP is defined as a logical container.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:90.0pt;text-indent:-18.0pt;mso-list:l3 level2 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>As noted above, many of the components of the AIP would be common to many things and could be covered by a procedures document <span style='color:red'>What is this procedures document in OAIS terminology? </span>. The Packaging Information could be contained in a procedures document which essentially just has to say where all the components of the AIP are to be found.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The associated Descriptive Information is created by Generate Descriptive Information.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:90.0pt;text-indent:-18.0pt;mso-list:l3 level2 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>This again could be covered by a procedures document.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Coordinate Updates transfers the AIP to Archival Storage and the Descriptive Information to Data Management. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>I think I have provided enough detail – to provide more would be to stray into implementation details. <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>OAIS does not have a specific term for the documentation I am referring to. Just as it does not have a specific name for most documents.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>As the next level of <span class=gmail-m-6784099864281630584grame>iteration</span> one can work through the RepInfo or PDI of the procedures documents mentioned above – for example a Word file, written in English, written by a member of the OAIS staff and finalised at a specified time.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>I hope it can be understood that the view that I take, re-using OAIS Information concepts repeatedly, does not lead to a plethora of confusing AIPs <span style='color:red'>See my questions below.</span> but instead allows us to be logically coherent in our approach to preservation by simply mapping what I would imagine any good repository would normally be doing, or, alternatively, to check that a repository _<i>is</i>_ doing the right things. To confirm this all you <span class=gmail-m-6784099864281630584grame>have to</span> do is to go through the above steps and ask yourself whether any steps (or some equivalent steps since we are implementation agnostic) can be missed out.<o:p></o:p></p></div></div></blockquote><div><p class=MsoNormal style='margin-left:18.0pt'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:18.0pt'><span style='color:red'>How do you map the AIPs created by the OAIS in the role of the Producer to the components of the first AIP generated from the original Content Information? For example, if the the Fixity Information in the second AIP generated is the Fixity Information for one or more components of the original AIP, how is that reflected in the original AIP? How is this mapping created for each of the subsequent iterations of AIP generation? </span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#2E75B6;mso-style-textfill-fill-color:#2E75B6;mso-style-textfill-fill-alpha:100.0%'>The Packaging Information provides the linkages.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'>Regards<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:18.0pt'><span style='color:#888888'>David<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#888888'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#888888'> <o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>MOIMS-DAI mailing list<br><a href="mailto:MOIMS-DAI@mailman.ccsds.org">MOIMS-DAI@mailman.ccsds.org</a><br><a href="https://mailman.ccsds.org/cgi-bin/mailman/listinfo/moims-dai" target="_blank">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/moims-dai</a><o:p></o:p></p></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>