[Moims-dai] Research Object

Rosemarie.Leone at esa.int Rosemarie.Leone at esa.int
Thu Oct 18 11:34:02 UTC 2018


As discussed, Roseamarie

ESA - European Space Agency 
Rosemarie Leone | ESA Information Technology Department
ESRIN | Via Galileo Galilei, 00044 Frascati, Rome, Italy
Tel +39 06 94188855 | M. +39 (0) 348 2310029
rosemarie.leone at esa.int | www.esa.int

From:   "David Giaretta" <david at giaretta.org>
To:     <john.s.hughes at jpl.nasa.gov>
Cc:     MOIMS-DAI List <moims-dai at mailman.ccsds.org>
Date:   18/10/2018 11:02
Subject:        [Moims-dai] Ideas for Use Cases/Scenarios for OAIS-IF
Sent by:        "MOIMS-DAI" <moims-dai-bounces at mailman.ccsds.org>

Do these types of Use Cases make sense. I’d like a sanity check before 
going any further.
NOTE: Consumer and Producer roles may be fulfilled by people, systems, 
organisations or OAISes
Overall aim: Consumer should be able to use the OAIS-IF specifications to 
create software which allows the following use cases to be implemented
Consumer identifies Information wanted from the OAIS.
The Information could be:
                                                               i.      AIP
                                                             ii. Subset of 
Content Data Object
                                                           iii.      Any 
of the components of the related AIP e.g. Provenance
Consumer may need to be authenticated
Consumer gets DIP from OAIS
Consumer may need to be authenticated and checked to have appropriate 
DIP packaging information must be agreed
Transmission protocol must be provided
Consumer extracts Information Object (CIO, Provenance Object etc) from AIP
Consumer must have Data Object and at least the immediately required 
Representation Information
                                                               i. E.g. for 
FITS file would need RepInfo which consists of FITS software plus 
associated dictionary
FITS s/w Information Object may consist of a Data Object which is JAVA 
class, in which case its RepInfo might be a Java Virtual Machine
                                                             ii.      For 
PDF just need a PDF viewer
Consumer uses Information Object to perform Preservation Objectives
Consumer have Data Object and its Representation Information
Consumer can use the RepInfo to extract structural elements and 
appropriate semantics from the data object
                                                               i.      If, 
for example, the Information Object is Provenance Information then one 
should be able to extract a list of events and for each event the agent, 
time etc
NOTE: We may need to define simple interfaces for each of the PDI 
Producer agrees submission agreement with the OAIS including SIP 
Need to exchange Information Object which consists of an agreement TBD
Alternatively this could be handled out of band i.e. not specified in the 
Producer sends SIP to the OAIS
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