default_spec

<default_spec> ::=
  DEFAULT {
    <literal>
  | NULL
  | USER
  | USERGROUP
  | SYSDBA
  | DATE
  | TIME
  | TIMESTAMP
  | UTCDATE
  | UTCDIFF
  | TIMEZONE
  | TRUE
  | FALSE
  | TRANSACTION
  | STAMP
  | SERIAL[(<unsigned_integer>)]
  }

Referenced by:

<column_attributes>, <column_change_definition>, <create_domain_statement>