Have you considered using prototypes for notes in Tinderbox? This allows you to create schemas for different classes of notes, e.g. no ISBN number for web URLs ...
Was this your concern?

Jeffery Smith wrote:

Actually, I'm reviewing a few right now (the one named "part two"). It
occurred to me that a notecard system would always have some fields in
common (fields for notes, source, topic, category, etc.), but
Zettelkasten doesn't seem to have any fixed template. Tinderbox would
allow taking a note (notes) with a title or topic, and then a seemingly
unlimited number of specific fields for tracking the source, date,
whether or not it is a quote, etc. With Filemaker, I can make a basic
template, and then design a form with the relevant notes. My issue is
that I get distracted by futzing with the form, the programming, the
appearance, etc. If I could master Tinderbox just for Zettelkasten note
taking, I wouldn't have that distraction of tweaking the tool instead of
just using it.