Core Data by Tutorials 3rd

What is Core Data? You'll hear a variety of answers to this question: It’s a database! It's SQLite! It's not a database! And so forth. Here's the technical answer: Core Data is an object graph management and persistence framework in the OS X and iOS SDKs. That means Core Data can store and retrieve data, but it isn’t a relational database like MySQL or SQLite. Although it can use SQLite as the data store behind the scenes, you don’t think about Core Data in terms of tables and rows and primary keys.