---
title: PersistentIdentifier
framework: swiftdata
role: symbol
role_heading: Structure
path: swiftdata/persistentidentifier
---

# PersistentIdentifier

A type that describes the aggregate identity of a SwiftData model.

## Declaration

```swift
struct PersistentIdentifier
```

## Overview

Overview note: Decoded PersistentIdentifier and identifiers created by the DefaultStore are not considered equivalent.

## Topics

### Accessing identity information

- [id](swiftdata/persistentidentifier/id-swift.property.md)
- [PersistentIdentifier.ID](swiftdata/persistentidentifier/id-swift.struct.md)
- [storeIdentifier](swiftdata/persistentidentifier/storeidentifier.md)
- [entityName](swiftdata/persistentidentifier/entityname.md)

### Instance Properties

- [isTemporary](swiftdata/persistentidentifier/istemporary.md)

### Type Methods

- [identifier(for:entityName:primaryKey:)](swiftdata/persistentidentifier/identifier(for:entityname:primarykey:).md)

## Relationships

### Conforms To

- [Comparable](swift/comparable.md)
- [Decodable](swift/decodable.md)
- [Encodable](swift/encodable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Identifiable](swift/identifiable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Identifying the model instance

- [persistentModelID](swiftdata/persistentmodel/persistentmodelid.md)
- [modelContext](swiftdata/persistentmodel/modelcontext.md)