| Name | Description | Type | Additional information |
|---|---|---|---|
| userID | globally unique identifier |
None. |
|
| month | integer |
None. |
|
| year | integer |
None. |
| Name | Description | Type | Additional information |
|---|---|---|---|
| userID | globally unique identifier |
None. |
|
| month | integer |
None. |
|
| year | integer |
None. |