Don't get carried away with keys, triggers and stuff like that at this point.

For a start off your example is not normalised. You would have a person
table and a food table but then you will need a person-food table as the
relationship between person and food is many-to-many so you have to break
that up using an 'intersection entity'. Think what you want to store (if
anything) in a row like <John, Apple> - it could be things like last-eaten.

Then if you think on, you probably will want to break it up again as you
will want to hold 'dishes', like peaches-and-cream or eggs-benedict.

Work with the data first before getting hung up a SQLite table declarations.

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