SwiftData updates

Overview

Browse notable changes in SwiftData.

June 2025

• Increase the flexibility of your models by adopting inheritance through the Model() macro.

• Gain added flexibility in accessing and sorting transaction history using sortBy in the HistoryDescriptor.

June 2024

Macros

• Improve performance of sorts and predicate-based fetches by using the Index(_:) macro to define individual and compound indexes.

• Define a unique constraint that includes one or more model attributes using the Unique(_:) macro, enabling SwiftData to regard tuples of attributes as unique.

• Specify nil as a relationship’s inverse to create a unidirectional relationship.

Persistent history

• Fetch historical changes for one or more persistent models using the model context’s fetchHistory(_:) method.

• Delete stale model history from a persistent store by calling the context’s deleteHistory(_:) method.

• Provide an alternate change tracking strategy for your custom persistent store by adopting the HistoryProviding protocol.

Custom persistent stores

• Adopt the DataStore protocol (and related protocols) to provide custom storage for your app’s persistent models.

See Also

Technology updates

• Accelerate updates
• Accessibility updates
• ActivityKit updates
• AdAttributionKit Updates
• App Clips updates
• App Intents updates
• AppKit updates
• Apple Intelligence updates
• AppleMapsServerAPI Updates
• Apple Pencil updates
• ARKit updates
• Audio Toolbox updates
• AuthenticationServices updates
• AVFAudio updates
• AVFoundation updates