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[ddlm-group] Making this group the DDLm dictionary management group

  • To: ddlm-group <ddlm-group@iucr.org>
  • Subject: [ddlm-group] Making this group the DDLm dictionary management group
  • From: James Hester <jamesrhester@gmail.com>
  • Date: Thu, 7 May 2015 15:22:49 +1000
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Dear DDLm enthusiasts,

The original purpose of this group was to discuss and help develop the new suite of standards, encompassing CIF2, DDLm and dREL.  Now that CIF2 has been finalised, and DDLm adopted, I suggest that this group becomes the dictionary management group for DDLm.  I realise that this might be a novel approach to DDL management within the CIF community, but I believe it makes sense given (i) that a DDL is simply a dictionary describing the ontological domain rather than e.g. the powder diffraction domain, and (ii) that we expect DDL2 harmonisation work to produce additional attributes in time.

The same general rules apply:

(1) Meanings of attributes cannot change, beyond the addition of enumerated states
(2) Duplication of meanings or attributes is to be avoided



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