| extension name | file type | Classification |
|---|---|---|
| UDB | Dynamics AX User Database File | database file |
| UDL | Microsoft Universal Data Link File | database file |
| USR | FileMaker Pro Database File | database file |
| extension name | file type | Classification |
|---|---|---|
| UDB | Dynamics AX User Database File | database file |
| UDL | Microsoft Universal Data Link File | database file |
| USR | FileMaker Pro Database File | database file |