Advanced Swift 2 Application Development (Video 17)

This video tutorial covers the process of updating and migrating a database to a new version using the NS persistent store coordinator in the Core Data framework. It discusses the importance of retaining user data during updates and provides a step-by-step guide on modifying code to handle database migration. The tutorial also explains how to set up options for the persistent store coordinator to automate the migration process. Finally, it summarizes the key steps taken and introduces the next topic of core location.

What is the main challenge when updating an application with a database?

• Ensuring the application runs faster

• Keeping user data intact

• Reducing the size of the application

• Improving the user interface

What is the first step in preparing the database for migration?

• Changing the database schema

• Deleting user data

• Adding new data entries

• Commenting out duplicate checking code

What should be done after changing the model version during migration preparation?

• Add new features to the app

• Run the app to check for errors

• Delete the database folder

• Update the user interface

Which option allows Core Data to automatically attempt migration?

• NSInferMappingModelAutomaticallyOption

• NSAutomaticMigrationOption

• NSMigratePersistentStoresAutomaticallyOption

• NSPersistentStoreTypeOption

What is the result of setting both migration options to true?

• A mapping will be inferred if none is found

• The user interface will be updated

• The app will run faster

• The database will be deleted