table list / record editing

Is it possible to edit a record selected from a table list by populating a form rather than the editing page in the tutorial? would the data submitted from such a form modify the record?

The editing page is also a form, do you mean showing a modal instead ? or what kind of "form" ?

Something like that:

but this looks like an editing page, what is the difference ?

That is how the editing page looks like according to your tutorial, unless i did somne mistake..

you can edit any kind of fields to the Edit page of the form, and the table row values will publish the fields, what matters is the "fields names", they should match the table row columns names