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# AWS::DynamoDB::Table VectorAttribute
<a name="aws-properties-dynamodb-table-vectorattribute"></a>

The definition of a vector attribute for a vector index.

## Syntax
<a name="aws-properties-dynamodb-table-vectorattribute-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-dynamodb-table-vectorattribute-syntax.json"></a>

```
{
  "[AttributeName](#cfn-dynamodb-table-vectorattribute-attributename)" : {{String}}
}
```

### YAML
<a name="aws-properties-dynamodb-table-vectorattribute-syntax.yaml"></a>

```
  [AttributeName](#cfn-dynamodb-table-vectorattribute-attributename): {{String}}
```

## Properties
<a name="aws-properties-dynamodb-table-vectorattribute-properties"></a>

`AttributeName`  <a name="cfn-dynamodb-table-vectorattribute-attributename"></a>
The name of the vector attribute.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `255`  
*Update requires*: Updates are not supported.