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# Schema.Attribute

An object that describes the configuration and behavior of a specific property of a model class.

```
class Attribute
```

## Topics

### Creating an attribute

[`init(_:originalName:hashModifier:)`](/documentation/SwiftData/Schema/Attribute/init(_:originalName:hashModifier:))

[`init(name:originalName:options:valueType:defaultValue:hashModifier:)`](/documentation/SwiftData/Schema/Attribute/init(name:originalName:options:valueType:defaultValue:hashModifier:))

### Specifying value information

[`defaultValue`](/documentation/SwiftData/Schema/Attribute/defaultValue)

### Managing identity

### Determining behavior

[`options`](/documentation/SwiftData/Schema/Attribute/options)

[`isTransformable`](/documentation/SwiftData/Schema/Attribute/isTransformable)

### Versioning

[`hashModifier`](/documentation/SwiftData/Schema/Attribute/hashModifier)

### Encoding and decoding

### Hashing

### Comparing attributes

### Debugging

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`SchemaProperty`](/documentation/SwiftData/SchemaProperty)

[`Decodable`](/documentation/Swift/Decodable)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`Encodable`](/documentation/Swift/Encodable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

### Inherited By

[`CompositeAttribute`](/documentation/SwiftData/Schema/CompositeAttribute)

---

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