Core Data is a persistent framework provided by Apple for devices on its platform, used for storing data in a structured and efficient manner. Coursera's Core Data catalogue teaches you how to effectively use this framework for managing an object graph, persisting data to disk and fetching it as per requirement. You'll learn how to model your data, create relationships between objects, perform fetch requests, handle versioning and migrations, and much more. Gain a proficiency in Core Data and amplify your skills as an iOS developer, mastering the art of data persistence, object graph management, and performance optimization on the iOS platform.