Core Data: 3 table join?

Question

I know Core Data is not a database and there are many differences. Is this one?

In a database, I would commonly have the following

A ->> B ->> C

\"A\" h

Answer 1

Is it possible for core data to add tests for attributes of both b and a? Or will I have to iterate over each result set successively to get my final result?

select 
  p.id, p.total 
from 
  purcord p, line l, delivery d 
where 
  l.purcord_id = p.id
  and d.purcord_id = l.purcord_id
  and d.purcord_line_no = l.line_no
  and d.status = 'notdelivered'
  and l.status = 'open'
  and p.status = 'open'