I in advance would like to thank you for all respondent.

I was developing a database but I know nothing about programming so I have a problem develop it.

I wish to know what's the appropriate builder to go and what's those code.

Situation is like this:
Assume i have 3 page
1st page i key in data to buy list
2nd page is the stock list
3rd is the sell out list

I want to build a expression which when i buy in stock (1st page) it will auto add into stock list (2nd page) AND when i sell out (3rd page) it will minus out of the stock from stock list

are you not referring to an access database ?
this forum is for db2 problems

ops
i guess i should go to mic access forum
thanks.