In a valid-time table, a future row is a row with a valid-time period that begins after the current time. A row with a valid-time value of NULL is not considered a future row.
Transaction-time tables never have future rows. The transaction-time period of a row in a transaction-time table begins at the time the row is created in the transaction-time table.
In a bitemporal table, a future row is a row with a valid-time period that begins after the current time, and a transaction-time period that is open.