About
A date is a moment at the day precision level in a calendar.
The date data type is a time data type.
It is is an ordered numeric that should not contain any time part
- This is not always true, the date data type of oracle is for instance a datetime
- A datetime contains a time part (Hour, Minute, Seconds, …)
Id
A date is a day in a calendar.
A day is uniquely identified in a calendar in a time zone
- String
year-month-day
-
- Such as epoch day: An incrementing count of days where day 0 is at 1970-01-01