Crystallographic Information Framework

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DDL dictionary version 2.1.6

_item_related.function_code

Name:
'_item_related.function_code'

Definition:

   
     The code for the type of relationship of the item identified by
     _item_related.name and the defined item.

      ALTERNATE  indicates that the item identified in 
      _item_related.related_name is an alternative expression in terms 
      of its application and attributes to the item in this definition.

      ALTERNATE_EXCLUSIVE indicates that the item identified in 
      _item_related.related_name is an alternative expression in terms
      of its application and attributes to the item in this definition.
      Only one of the alternative forms may be specified.

      CONVENTION  indicates that the item identified in 
      _item_related.related_name differs from the defined item only
      in terms of a convention in its expression.

      CONVERSION_CONSTANT indicates that the item identified in 
      _item_related.related_name differs from the defined item only
      by a known constant.

      CONVERSION_ARBITRARY indicates that the item identified in 
      _item_related.related_name differs from the defined item only
      by a arbitrary constant.

      REPLACES  indicates that the defined item replaces the item identified 
      in _item_related.related_name.

      REPLACEDBY  indicates that the defined item is replaced by the
      item identified in  _item_related.related_name.

      ASSOCIATED_VALUE indicates that the item identified in 
      _item_related.related_name is meaningful when associated with the
      defined item.  

      ASSOCIATED_ESD indicates that the item identified in 
      _item_related.related_name is the estimated standard deviation of
      of the defined item.

Type: code

Mandatory item: yes


The data value must be one of the following:


alternate
alternate form of the item

alternate_exclusive
mutually exclusive alternate form of the item

convention
depends on defined convention

conversion_constant
related by a known conversion factor

conversion_arbitrary
related by a arbitrary conversion factor

replaces
a replacement definition

replacedby
an obsolete definition

associated_value
a meaningful value when related to the item

associated_esd
an estimated standard deviation of the item

associated_error
an estimated error of the item

Category: item_related