Updating list of _audit.schema

[Herbert J. Bernstein]

 In imgCIF (as with mmCIF) any and all categories may be looped -- its how
you put information into database tables.  - Herbert

On Wed, Jan 6, 2021 at 1:35 AM James Hester via comcifs <comcifs at iucr.org>
wrote:

> Dear COMCIFS,
>
> FIrst of all, Happy New Year to you all, I hope you've all been keeping
> well.
>
> I am writing to propose updating the list of _audit.schema in the core
> dictionary. Normally this would be core DMG business, but as it concerns
> most dictionaries covered by COMCIFS I believe this is the more appropriate
> forum. This has been prompted by reviewing the DDLm dictionary chapters for
> the next edition of Volume G. Please examine the list below and discuss any
> changes you would like to see.  The formal changes to the dictionary can be
> viewed as a diff at this link:
> https://github.com/COMCIFS/cif_core/pull/190/commits/5e3b84e6f84997f9822f704a9f380ff500e0410e
>
> As a reminder, the _audit.schema dataname indicates that one or more
> categories have become looped relative to the core CIF dictionary. For
> example, where multiple crystals are used in a measurement, the
> exptl_crystal category becomes looped. Ideally software will check this
> dataname and exit if the dataname has an incompatible value.
>
> best wishes,
> James.
>
> =====================================================
> loop_
> _enumeration_set.state
> _enumeration_set.detail
>     Base                'Original Core CIF schema'
>    'Space group tables' 'space_group category is looped'
>     Entry
> ;
>     entry category is defined and looped: multiple experiments
>     with results may be present
> ;
>     Powder              'Multiple compounds (phases) may be present'
>     Modulated           'Multiple subsystems may be present'
>     Experiments
> ;
>     diffrn and exptl_crystal categories are looped: multiple
>     diffraction measurements on multiple samples may be present
> ;
>     Macromolecular
> ;
>     mmCIF equivalent. Only single-key mmCIF categories containing children
>     of _entry.id are Set categories
> ;
>     Raw
> ;
>     imgCIF equivalent. As for Macromolecular, with the addition of
>     multiple detectors.
> ;
>     Laue
> ;
>     diffrn_radiation is looped: Multiple wavelengths are used.
> ;
>     Custom              'Examine dictionaries provided in _audit_conform'
>     Local               'Locally modified dictionaries. Datafile not for
> distribution'
> _enumeration.default    Base
> =======================
> --
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