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# AWS::Kendra::DataSource ColumnConfiguration
<a name="aws-properties-kendra-datasource-columnconfiguration"></a>

Provides information about how Amazon Kendra should use the columns of a database in an index.

## Syntax
<a name="aws-properties-kendra-datasource-columnconfiguration-syntax"></a>

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

### JSON
<a name="aws-properties-kendra-datasource-columnconfiguration-syntax.json"></a>

```
{
  "[ChangeDetectingColumns](#cfn-kendra-datasource-columnconfiguration-changedetectingcolumns)" : [ String, ... ],
  "[DocumentDataColumnName](#cfn-kendra-datasource-columnconfiguration-documentdatacolumnname)" : String,
  "[DocumentIdColumnName](#cfn-kendra-datasource-columnconfiguration-documentidcolumnname)" : String,
  "[DocumentTitleColumnName](#cfn-kendra-datasource-columnconfiguration-documenttitlecolumnname)" : String,
  "[FieldMappings](#cfn-kendra-datasource-columnconfiguration-fieldmappings)" : [ DataSourceToIndexFieldMapping, ... ]
}
```

### YAML
<a name="aws-properties-kendra-datasource-columnconfiguration-syntax.yaml"></a>

```
  [ChangeDetectingColumns](#cfn-kendra-datasource-columnconfiguration-changedetectingcolumns): 
    - String
  [DocumentDataColumnName](#cfn-kendra-datasource-columnconfiguration-documentdatacolumnname): String
  [DocumentIdColumnName](#cfn-kendra-datasource-columnconfiguration-documentidcolumnname): String
  [DocumentTitleColumnName](#cfn-kendra-datasource-columnconfiguration-documenttitlecolumnname): String
  [FieldMappings](#cfn-kendra-datasource-columnconfiguration-fieldmappings): 
    - DataSourceToIndexFieldMapping
```

## Properties
<a name="aws-properties-kendra-datasource-columnconfiguration-properties"></a>

`ChangeDetectingColumns`  <a name="cfn-kendra-datasource-columnconfiguration-changedetectingcolumns"></a>
One to five columns that indicate when a document in the database has changed.  
*Required*: Yes  
*Type*: Array of String  
*Minimum*: `1`  
*Maximum*: `5`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentDataColumnName`  <a name="cfn-kendra-datasource-columnconfiguration-documentdatacolumnname"></a>
The column that contains the contents of the document.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentIdColumnName`  <a name="cfn-kendra-datasource-columnconfiguration-documentidcolumnname"></a>
The column that provides the document's identifier.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DocumentTitleColumnName`  <a name="cfn-kendra-datasource-columnconfiguration-documenttitlecolumnname"></a>
The column that contains the title of the document.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`FieldMappings`  <a name="cfn-kendra-datasource-columnconfiguration-fieldmappings"></a>
An array of objects that map database column names to the corresponding fields in an index. You must first create the fields in the index using the [UpdateIndex](https://docs.aws.amazon.com/kendra/latest/dg/API_UpdateIndex.html) operation.  
*Required*: No  
*Type*: Array of [DataSourceToIndexFieldMapping](aws-properties-kendra-datasource-datasourcetoindexfieldmapping.md)  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)