Hi! Can anyone please provide me with a little bit of information regarding this subject? I think I've heard from a lecturer that there is a command to auto-update the entries of a table. For example, when a new record is inserted, the salary column would be auto-inserted with (rough_salary - tax_rate) without having the user to key in the salaries. In case, it is trigger you are thinking of, I don't think that is it. Anyone get me? Thanks.