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Classification scheme

A classification scheme is an official terminological system, recognised and endorsed by a national or international body, that is used to classify data.

In METeOR examples of classification schemes include the:

  • Australian Standard Classification of Occupations (2nd edition) 
  • International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian Modification (3rd edition).


A classification scheme may be implemented by one or more value domains.

For example, the Australian Standard Classification of Occupations (2nd edition) is implemented by the value domain Occupation code (ASCO 2nd edn) NNNN.

Below is a graphical representation of the relationship between classification schemes and related metadata item types.

Figure 1: Diagrammatic representation of classification scheme relationships in METeOR metadata structures.