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=====CoreData===== An iOS framework that allows interaction with the device-local database. CoreData allows an efficient, salable, and highly supportive local database. Note that you can still directly work with a database using, for example, SQL queries. Broadly, CoreData allows you to store objects to a device and retrieve them using given parameters. Though more code-heavy than NSUserDefaults, it is magnitudes more efficient and provides a advanced interface for designing models. Implementing CoreData into your application: -Add CoreData framework -Import CoreData