[Moims-dai] Architecture Description

[david]

Yes, necessary, but not sufficient.DavidSent from my Samsung Galaxy smartphone.
-------- Original message --------From: Mark Conrad <mark.conrad at nara.gov> Date: 12/06/2019  19:15  (GMT+00:00) To: MOIMS-Data Archive Interoperability <moims-dai at mailman.ccsds.org> Cc: "Hughes, John S (398B)" <john.s.hughes at jpl.nasa.gov> Subject: Re: [Moims-dai] Architecture Description "Preservation Description Information (PDI): The information, which along with Representation Information, is necessary for adequate preservation of the Content Data Object"On Wed, Jun 12, 2019 at 1:38 PM David Giaretta <david at giaretta.org> wrote: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. ..David From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of Mark ConradSent: 12 June 2019 17:51To: MOIMS-Data Archive Interoperability <moims-dai at mailman.ccsds.org>Cc: Hughes, John S (398B) <john.s.hughes at jpl.nasa.gov>Subject: Re: [Moims-dai] Architecture Description " 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? " Because PDI does not apply to all Information_Objects - only Content_Information. Mark ConradNARA Information ServicesSystems Engineering Division (IT)The National Archives and Records AdministrationErma Ora Byrd Conference and Learning CenterBuilding 494, Room 225610 State Route 956Rocket Center, WV  26726Phone: 304-726-7820Fax: 304-726-7802Email: mark.conrad at nara.gov   On Tue, Jun 11, 2019 at 9:17 AM David Giaretta <david at giaretta.org> wrote:Hi Steve 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? 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? Is there are mix-up between Information_Object and Information_Package? 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. Regards ..David From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of Hughes, John S (398B) via MOIMS-DAISent: 11 June 2019 03:16To: MOIMS-Data Archive Interoperability <moims-dai at mailman.ccsds.org>Cc: Hughes, John S (398B) <john.s.hughes at jpl.nasa.gov>Subject: [Moims-dai] Architecture Description Hi all, 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. Thanks,Steve _______________________________________________MOIMS-DAI mailing listMOIMS-DAI at mailman.ccsds.orghttps://mailman.ccsds.org/cgi-bin/mailman/listinfo/moims-dai_______________________________________________
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