What is Core Data fault?
In Core Data, faults are placeholders, or “unrealized objects”. They are small objects which refer to other NSManagedObjects, which are fetched into memory only as needed. This faulting mechanism is designed to enhance performance and reduce memory use.
How do I clear my Core Data?
Delete Everything (Delete All Objects, Reset Core Data) One approach to delete everything and reset Core Data is to destroy the persistent store. Deleting and re-creating the persistent store will delete all objects in Core Data.
Where is Core Data saved?
The persistent store should be located in the AppData > Library > Application Support directory. In this example you should see a SQLite database with extension . sqlite. It is possible that you don’t see the persistent store in the Application Support directory.
When should you save Core Data?
Best Core Data save strategy (when to save data to disk)
- save context at the end of every change.
- save context only on app’s exit (like in Apple’s samples)
- save context on app’s exit, going to background or becoming not active (incoming phone call for example)
Is Core Data thread safe?
Core Data is designed to work in a multithreaded environment. However, not every object under the Core Data framework is thread safe. To use Core Data in a multithreaded environment, ensure that: Managed object contexts are bound to the thread (queue) that they are associated with upon initialization.
How do I uninstall NSPersistentContainer?
You need to use the persistent store coordinator for that. NSPersistentContainer has a property called persistentStoreController , and that has a method called remove , which does what you’re looking for.
What is Core Data migration?
Core Data can typically perform an automatic data migration, referred to as lightweight migration. Lightweight migration infers the migration from the differences between the source and the destination managed object models.
What is Core Data store?
Core Data provides an in-memory persistent store and three disk-based persistent stores, as described in Table 16-1. The binary store ( NSBinaryStoreType ) is an atomic store, as is the XML store ( NSXMLStoreType ). You can also create custom store types, atomic and incremental.
Should you use Core Data?
The next time you need to store data, you should have a better idea of your options. Core Data is unnecessary for random pieces of unrelated data, but it’s a perfect fit for a large, relational data set. The defaults system is ideal for small, random pieces of unrelated data, such as settings or the user’s preferences.
What is the purpose of NSManagedObjectContext?
A managed object context is an instance of NSManagedObjectContext . Its primary responsibility is to manage a collection of managed objects. These managed objects represent an internally consistent view of one or more persistent stores.