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Is it possible to create additional 'fields' in the geodatabase domain system table (GDB_items) in SDE 10.3/Oracle?

It would be handy to store additional information in domains. For example:

  • CODE [domain coded value]
  • NAME [domain description]
  • Additional fields: DETAILS, COMMENTS, RELATED_DOCUMENT, etc.

I know it wouldn't be accessible in ArcGIS desktop's out-of-box functionality, but maybe it would be possible to query it with SQL?

The SQL used to access the domain would look like this, but include additional 'fields':

select         
    extractvalue(codedvalues.column_value, 'CodedValue/Code') as domain_code, 
    extractvalue(codedvalues.column_value, 'CodedValue/Name') as domain_description
from         
    sde.gdb_items_vw
cross join
    xmlsequence(xmltype(definition).extract('/GPCodedValueDomain2/CodedValues/CodedValue')) codedvalues 
where       
    sde.gdb_items_vw.name = 'STRATEGY'

Or, as an alternative, would it be an acceptable practice to create a separate table that is related to the domain by the CODE value? And then join to it using the query mentioned above?

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    If you don't mind using a completely unsupported geodatabase, with the possibilty of corruption at the next upgrade... All-in-all, I'd recommend a parallel table (owned by a different user).
    – Vince
    May 10, 2016 at 20:10
  • @Vince: Why owned by a different user?
    – User1974
    May 10, 2016 at 21:17
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    To prevent namespace pollution.
    – Vince
    May 10, 2016 at 21:53

1 Answer 1

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Vince's comment as the answer:

...I'd recommend a parallel table.

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