What is SwiftData?
Generated on 8/6/2024
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SwiftData is a framework introduced in iOS 17 that allows developers to model and persist their app's data across all of Apple's platforms using Swift. It provides a lightweight API that integrates naturally with Swift, enabling developers to define their data schema with minimal code. Key features of SwiftData include:
- Persistence: It allows for the storage and retrieval of data across app launches.
- Modeling and Migration: It supports the creation and evolution of data models.
- Graph Management: It helps manage relationships between data entities.
- Synchronization with CloudKit: It can sync data with Apple's CloudKit.
- Custom Data Stores: Developers can use alternative backends like SQLite, remote web services, or JSON files.
- History Tracking: It keeps track of changes in the data store, useful for syncing with remote services or app extensions.
For more detailed information, you can refer to the session What’s new in SwiftData (00:01:01).
Create a custom data store with SwiftData
Combine the power of SwiftData’s expressive, declarative modeling API with your own persistence backend. Learn how to build a custom data store and explore how to progressively add persistence features in your app. To get the most out of this session, watch “Meet SwiftData” and “Model your schema with SwiftData” from WWDC23.
What’s new in SwiftData
SwiftData makes it easy to add persistence to your app with its expressive, declarative API. Learn about refinements to SwiftData, including compound uniqueness constraints, faster queries with #Index, queries in Xcode previews, and rich predicate expressions. Join us to explore how you can use all of these features to express richer models and improve performance in your app. To discover how to build a custom data store or use the history API in SwiftData, watch “Create a custom data store with SwiftData” and “Track model changes with SwiftData history”.
Platforms State of the Union
Discover the newest advancements on Apple platforms.
Track model changes with SwiftData history
Reveal the history of your model’s changes with SwiftData! Use the history API to understand when data store changes occurred, and learn how to use this information to build features like remote server sync and out-of-process change handing in your app. We’ll also cover how you can build support for the history API into a custom data store.