1  –  field-name

    Specifies the field element whose properties you are displaying.

    When you use the FROM DATABASE clause, specify only one field
    name for each SHOW FIELD command.

    Specify an asterisk (*)  wildcard character for the entire field-
    name parameter only. If you use a wildcard character as part of
    the field-name parameter, an error occurs.

2  –  database-name

    Specifies the Oracle Rdb database that contains the field. CDO
    requires this parameter for fields from an Oracle Rdb database.
    CDO accepts wildcard characters in the database name.