# Shard


A uniquely identified group of stream records within a stream.

## Contents


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

 ** ParentShardId **   <a name="DDB-Type-streams_Shard-ParentShardId"></a>
The shard ID of the current shard's parent.  
Type: String  
Length Constraints: Minimum length of 28. Maximum length of 65.  
Required: No

 ** SequenceNumberRange **   <a name="DDB-Type-streams_Shard-SequenceNumberRange"></a>
The range of possible sequence numbers for the shard.  
Type: [SequenceNumberRange](API_streams_SequenceNumberRange.md) object  
Required: No

 ** ShardId **   <a name="DDB-Type-streams_Shard-ShardId"></a>
The system-generated identifier for this shard.  
Type: String  
Length Constraints: Minimum length of 28. Maximum length of 65.  
Required: No

## See Also


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/streams-dynamodb-2012-08-10/Shard) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/streams-dynamodb-2012-08-10/Shard) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/streams-dynamodb-2012-08-10/Shard)