Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I started using entity inheritance today with core data, does anyone have any experience with this feature?. I see that all of my entities that have a parent entity have now converted into one big table when opening the sqlite file. I’m worried about performance and table locks. Anyone please share their experience?
the Reverend,
While your schema can dramatically affect your performance, added columns to rows in a table is not your performance problem. Traversing complex relations and managing large BLOBs is your performance problem.
Yes, I use the entity inheritance. Yes, it is fast. Yes, it has allowed me to make a sane model. That said, the conventional OOP wisdom these days is to limit the depth of your inheritance hierarchies. This is probably a good idea when using Core Data. Composition of objects/entities is your friend.
Andrew