We have a table named Billionaires with columns ID, name, birth_year, and net_worth.
| ID | name | birth_year | net_worth |
|---|---|---|---|
| 1 | Elon Musk | 1971 | $218B |
| 2 | Bernard Arnault | 1949 | $188B |
| 3 | Jeff Bezos | 1964 | $165B |
Write in one line how the column birth_year will be stored in a columnar database.
Please note: Use a semi-comma at the end of the line (
;)