4 ms·
tl;dr: When operating over a small subset of a large dataset use an ORM such as Core Data, when operating over a large subset of a large dataset use direct SQL
by DenisM 17y ago
tl;dr: When operating over a small subset of a large dataset use an ORM such as Core Data, when operating over a large subset of a large dataset use direct SQL access.
There are also couple of useful links in there.