Ho Pob,

It's not hard but it takes some time and it depends on how many smartbox you have.

After you create you database you will need to remap the service object bindings and map it to the new data source (this should be done for all methods).

Here is a video showing how to change the data source for two methods (Open the video in IE).

You can do it in the designer and in K2 Studio.

hope that helps.