Video based Quiz

Notes for Quiz

• Realm is based on ORM model.
• Core Data has a massive learning curve compared to Realm.
• Data doesn't copy from disk rather uses memory mapping to actually link properly straight to the data disk.
• Modifying Realm model objects must be done inside a write transaction.
• All Realm objects are thread-confined.
• An exception will be called if trying to access an object across threads.
• A best practice is to re-fetch the same Realm object on the new thread.
• During the schema migration an exception will be thrown if a Realm model object and a Realm object mismatch is detected.
• A Realm configuration object allows the supplying of a block that will be called to migrate existing data to a new schema.