Possible Duplicate:
Save history editable data RDBMS
I am totally new to databases and MySQL. I am working on a project in which I have a few related fields such as question and multiple choice asnwers. The value of those fields changes from time to time as data gathers.
Now my question is: how can I track those changes so that at any given time I am able to display the correct combination of the data? Any hints would be really appreciated.