Do you have experience using Core Data object graph management system for data storage in iOS applications?

Yes, I have experience using Core Data for data storage in iOS applications. Core Data is a powerful framework from Apple for managing object graphs and data persistence.

With Core Data, you can:

• Define data models with attributes and relationships.
• Perform queries to the database using NSFetchRequest.
• Automatically manage data changes and synchronization.

Example of simple object saving:

let context = persistentContainer.viewContext
let newItem = NSEntityDescription.insertNewObject(forEntityName: "Item", into: context)
newItem.setValue("Example", forKey: "name")
try? context.save()

Core Data is well-suited for complex models with relationships and provides efficient memory and performance management.