# SwiftData updates Learn about important changes to SwiftData. ## Overview Browse notable changes in . ## June 2026 - Section your query results by creating your query with a macro that takes a `sectionBy` parameter, as listed on the page. - Use types that conform to in a model, including types you don’t control directly, by using the option for . - Receive real-time updates to models that match specified fetch criteria by using the type. - Observe remote model changes with the type. ## June 2025 - Increase the flexibility of your models by adopting inheritance through the macro. - Gain added flexibility in accessing and sorting transaction history using in the . ## June 2024 ### Macros - Improve performance of sorts and predicate-based fetches by using the macro to define individual and compound indexes. - Define a unique constraint that includes one or more model attributes using the 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 method. - Delete stale model history from a persistent store by calling the context’s method. - Provide an alternate change tracking strategy for your custom persistent store by adopting the protocol. ### Custom persistent stores - Adopt the protocol (and related protocols) to provide custom storage for your app’s persistent models. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)