auth_subfield_structure
| 欄位 | 型態 | 範例 |
| authtypecode | char(10) | |
| tagfield | char(3) | |
| tagsubfield | char(1) | |
| liblibrarian | char(255) | |
| libopac | char(255) | |
| repeatable | tinyint(4) | |
| mandatory | tinyint(4) | |
| tab | tinyint(1) | |
| authorised_value | char(10) | |
| value_builder | char(80) | |
| seealso | char(255) |
