[Nitro] Og store vs sql over-ride methods

[Mark Van De Vyver]

Hi,
Is my understanding correct?:

Methods def'd but 'Not implemented' in 'store.rb', should or must (?)
be implemented by one of its subclasses.  There can be many stores,
and SQL is one (popular) type.

Methods def'd 'Not implemented' in 'sql.rb', should or must (?) be
implemented by one of its subclasses.

 If this is right shouldn't the transaction related methods in
'store.rb' rather be in 'sql.rb'?

Pedantic, and not fatal, I know but I'm trying to get a handle on what
Og considers an SQL adapter should or must(?) implement - to my mind
sql.rb should contain that info...
Comments?

Mark