[development] After form submit

Hello, I'm new to Drupal, and after looking FAPI documentation there are some kind of things that are not clear to me. Where go the data once the form has been submitted?? The data submitted on a form is stored as a node or other kind of content or have I to create a table on the database and storing post values inside that table??? How can I create a view where I can show all the data that has been submitted??? Thanks in advance