[CESG] RE: Draft 2.0, Fall 2012 CESG report to the CMC

Hooke, Adrian J (9000) adrian.j.hooke at jpl.nasa.gov
Wed Nov 14 10:11:06 EST 2012

I have added the following slide to the "Items brought to the attention of the CMC" section. Please let me know if you have changes.

Nestor: I interpreted your comment "This was to be their last planned re-affirmation" to mean that MOIMS no longer recommends them to new Projects. Is that true?


Periodic Review and Deprecation

The following documents are up for periodic review
*         CCSDS 620.0-B-2: Standard Formatted Data Units¬ Structure and Construction Rules
*         CCSDS 622.0-B-1: Standard Formatted Data Units¬ Referencing Environment
*         CCSDS 630.0-B-1: Standard Formatted Data Units ¬ Control Authority Procedures
*         CCSDS 632.0-B-1: Standard Formatted Data Units ¬ Control Authority Data Structures
*         CCSDS 641.0-B-2: Parameter Value Language Specification (CCSD0006 and CCSD0008)
*         CCSDS 643.0-B-1: ASCII Encoded English (CCSD0002)
*         CCSDS 647.1-B-1:  Data Entity Dictionary Specification Language (DEDSL)-Abstract Syntax (CCSD0011)
*         CCSDS 647.2-B-1:  Data Entity Dictionary Specification Language (DEDSL)¬PVL Syntax (CCSD0012)
*         CCSDS 647.3-B-1:  Data Entity Dictionary Specification Language (DEDSL)¬ XML/DTD Syntax (CCSD0013 )

This was to be their last planned re-affirmation. However, there are no resources available to perform the reviews

First thought was simply to re-affirm them without review and to add a disclaimer that they will be deprecated to Historical (Silver Book) status in five years.
*         However, Silver Book status puts them on the Non-Normative track.  But we have data stored in SFDU format with the intention of it being stored for the long-term, possibly 50 + years.  An argument has been made that the SFDU family should not be deprecated to Silver any more than the Fortran or the even older COBOL language standards are disposed of
-          The standards for the computer languages remain standards, even when other computer languages are adopted for wide-spread use.
Silver Book status does not "dispose of" them. It simply removes them from the list of standards that CCSDS recommends to new projects. The 50+ year missions are still going to be able to find the root specifications prominently available on the CCSDS website http://<http://public.ccsds.org/publications/SilverBooks.aspx>public.ccsds.org/publications/SilverBooks.aspx<http://public.ccsds.org/publications/SilverBooks.aspx>  and that is probably all that they care about

Does the CMC have any comment?


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