# DataSource
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Data sources that are associated with an OpenSearch application. 

## Contents
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 ** dataSourceArn **   <a name="opensearchservice-Type-DataSource-dataSourceArn"></a>
The Amazon Resource Name (ARN) of the domain. See [Identifiers for IAM Entities ](https://docs.aws.amazon.com/IAM/latest/UserGuide/index.html) in *Using AWS Identity and Access Management* for more information.   
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `.*`   
Required: No

 ** dataSourceDescription **   <a name="opensearchservice-Type-DataSource-dataSourceDescription"></a>
Detailed description of a data source.  
Type: String  
Length Constraints: Maximum length of 1000.  
Pattern: `^([a-zA-Z0-9_])*[\\a-zA-Z0-9_@#%*+=:?./!\s-]*$`   
Required: No

 ** iamRoleForDataSourceArn **   <a name="opensearchservice-Type-DataSource-iamRoleForDataSourceArn"></a>
The ARN of the IAM role to be used for cross account/region data source association.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
Pattern: `arn:(aws|aws\-cn|aws\-us\-gov|aws\-iso|aws\-iso\-b):iam::[0-9]+:role\/.*`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/opensearch-2021-01-01/DataSource) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/opensearch-2021-01-01/DataSource) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/opensearch-2021-01-01/DataSource)