What is NSEntityDescription in Swift?
An NSEntityDescription object is associated with a specific class whose instances are used to represent entries in a persistent store in applications using the Core Data Framework. Minimally, an entity description should have: A name. The name of a managed object class.
Why is room better than SQLite?
Room is now considered as a better approach for data persistence than SQLiteDatabase. It makes it easier to work with SQLiteDatabase objects in your app, decreasing the amount of boilerplate code and verifying SQL queries at compile time.
What is a managed object context in core data?
A managed object context represents a single object space, or scratch pad, in a Core Data application. A managed object context is an instance of NSManagedObjectContext. Its primary responsibility is to manage a collection of managed objects.
What is a managed object context in iOS 12?
This is an abridged chapter from our book Core Data by Tutorials, which has been completely updated for Swift 4.2 and iOS 12. This tutorial is presented as part of our iOS 12 Launch Party — enjoy! A managed object context is an in-memory scratchpad for working with your managed objects. Most apps need just a single managed object context.
What is the parent store for a managed object?
Managed object contexts have a parent store from which they retrieve data representing managed objects and through which they commit changes to managed objects. Prior to OS X v10.7 and iOS v5.0, the parent store is always a persistent store coordinator.
What is the use of context in persistent store?
The context is responsible for watching for changes in its objects and maintains an undo manager so you can have finer-grained control over undo and redo. You can insert new objects and delete ones you have fetched, and commit these modifications to the persistent store.