hello,,its regarding a updation of database tables !

hello all,

i'm student in germany and my problem is as follows:

when ever im making some change the domain or data element in my tables ,

all my entries r lost,i want to write a program such that ,

i can save my entries of database table in an exel sheet and

update the same in my tables when required,

i want the steps to be followed to write this program.

thanking you,

Nisha Jagtap.