Hello Yuriy...I was wondering what path you took to solve your issue? We are looking for a capability of having hte customer create their own input forms that tie to a database behind the scenes. Then once they create the data...they can hook to it with tableau.
I was wondering too by your question and didn't thought that somebody will start asking same question considering how much time has passed.
Here could be many ways to do it. We use Ruby on rails and C# for solving my question.
MS Access form and MS SQL a quite easy way for MS Office user.
The following my notes could describe a way to store scripts directly in tableau using data uri. but this is not good solution and could not be in production till officially tableau support.
Demo Workbook (Tableau Reader):
Voting for demo workbook ideas or comment:
Could you describe little bit more your task?