If you will like to always update the amount column everyday
Use
Code:
UPDATE saving
SET amount = amount * 1.1
but I will also caution and make sure that this is what you really want to do every time, if not make sure you add a where clause. It might be you only what to update records that have changed.
Code:
UPDATE saving
SET amount = amount * 1.1
WHERE (SSN= '999999999')
let me know if you to only change only columns that have changed values.
Jaime E. Maccou