dojo grid from 3 different sources

I'm new with dojo. I need to get data from 3 different database tables and diplay them on the browser (maybe a grid) and show friends (name+img) of the logged in user with the title of the recommended movie.

table #1 fields: username, friend id, movie id (that the friend recommends to the user),... table #2 fields: movie id, movie link, img, movie title, desc,... table #3 fields: username, firstName, lastName, user img, ...

from table #1 I need to get all the fields. Then to get from table #3 (based on the friend id) the friend image, first+last name , therefore friend will be declared as username (friend id=username). And, from table #2 I need to get most of the fields based on movie id, especially: movie title, link, desc, etc.

On the server-side I use RESTful Web Services (Java, Json).

Do you have any suggestion how can I do it with dojo?