# S3KnowledgeBaseParameters
<a name="API_S3KnowledgeBaseParameters"></a>

The parameters that are required to connect to a S3 Knowledge Base data source.

## Contents
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**Note**  
In the following list, the required parameters are described first.

 ** BucketUrl **   <a name="QS-Type-S3KnowledgeBaseParameters-BucketUrl"></a>
The URL of the S3 bucket that contains the knowledge base data.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Required: Yes

 ** MetadataFilesLocation **   <a name="QS-Type-S3KnowledgeBaseParameters-MetadataFilesLocation"></a>
The location of metadata files within the S3 bucket that describe the structure and content of the knowledge base.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Required: No

 ** RoleArn **   <a name="QS-Type-S3KnowledgeBaseParameters-RoleArn"></a>
Use the `RoleArn` structure to override an account-wide role for a specific S3 Knowledge Base data source. For example, say an account administrator has turned off all S3 access with an account-wide role. The administrator can then use `RoleArn` to bypass the account-wide role and allow S3 access for the single S3 Knowledge Base data source that is specified in the structure, even if the account-wide role forbidding S3 access is still active.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 2048.  
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/quicksight-2018-04-01/S3KnowledgeBaseParameters) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/quicksight-2018-04-01/S3KnowledgeBaseParameters) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/quicksight-2018-04-01/S3KnowledgeBaseParameters)