ios - Core data performances: when all entities inherit from the same parent entity -

in core data database, entities inherit parent entity.

for reason, i've realized that, under wood, entries added 1 table (a table entities), rather multiple tables (a table each entity) in sqlite.

i'm wondering if terribly affect performances, since data inserted in 1 table.

thanks

it affect performance, how depends on how commonality there between objects , how many objects have. if there little commonality , don't need associated class inheritance of managed object subclasses making child of same entity isn't useful. use instruments check what's going on. performance issues caused other things such fetch request structure , batch size.