Portal in a web form?

[idiotmachine]

ok here goes... users enter username and password bringing them to a form allowing them to change information on their business record, which includes a unique account number(which is of course unmodifiyable).Is it possible to add a button to a new form in another database where the account number is is transferred from the first?

ex. user enters and modifies a business record, from there i would like them to be able to enter their business events into another related database. is this possible on the web?

[Anatoli]

That is quite basic functionality and you can do it e.g. with tokens.