A submission form (a form for users to submit information into a database) is a very common use-case for Xataface. This tutorial teaches you how to do it the right way.
In order to allow the public to use your submission form (insert new records) but not edit, browse, and delete existing records you need to define some permissions.
The submission form still has a lot of extra buttons to click on (the details, list, and find tabs), and other distracting features (e.g. the search form) that need to be disabled.