Crystallographic Information Framework

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Index

DDL dictionary version 2.1.3

Category SUB_CATEGORY

Name:
'sub_category'

Description:

   
     The purpose of a subcategory is to define an association between
     data items within a category and optionally to provide a method to
     validate the collection of items.   For example, the subcategory named
     'cartesian' might be applied to the data items for the coordinates
      x,  y and z.

Category groups:
    ddl_group
    sub_category_group
Category key:
    _sub_category.id

Mandatory category: no


International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

First online edition (2006)

Edited by S. R. Hall and B. McMahon

An essential guide and reference to CIF for programmers, data managers handling crystal-structure information and practising crystallographers.