used XLS but it keeps giving me errors an don't know what to do, to specify it's the product template form view that I want to

export and import in my module

here is the error:

ERREUR: une valeur NULL viole la contrainte NOT NULL de la colonne « num_ligne »
is it about fields organisation or what exactly??thankyou for you anwser

Yes. 

Views are records just like any other kind of record.  If you look at any module you will see views are created through XML.  Importing is creating them via CSV or XLS.

As long as the module the view is based on exists in the other database, you shouldn't have any problems.