Description of the illustration virtual_column_definition.eps

column 
  [ datatype [ DOMAIN [ domain_owner.] domain_name ]
         | DOMAIN [ domain_owner.] domain_name
  [ COLLATE column_collation_name ] ]
  [ VISIBLE | INVISIBLE ]
  [ GENERATED ALWAYS ] 
     AS (column_expression) [ VIRTUAL | MATERIALIZED ]
  [ evaluation_edition_clause ] [ unusable_editions_clause ]
  [ inline_constraint [ inline_constraint ]... ]