# Input
<a name="API_Input"></a>

When you configure the application input for a SQL-based Kinesis Data Analytics application, you specify the streaming source, the in-application stream name that is created, and the mapping between the two. 

## Contents
<a name="API_Input_Contents"></a>

 ** InputSchema **   <a name="APIReference-Type-Input-InputSchema"></a>
Describes the format of the data in the streaming source, and how each data element maps to corresponding columns in the in-application stream that is being created.  
Also used to describe the format of the reference data source.  
Type: [SourceSchema](API_SourceSchema.md) object  
Required: Yes

 ** NamePrefix **   <a name="APIReference-Type-Input-NamePrefix"></a>
The name prefix to use when creating an in-application stream. Suppose that you specify a prefix "`MyInApplicationStream`." Kinesis Data Analytics then creates one or more (as per the `InputParallelism` count you specified) in-application streams with the names "`MyInApplicationStream_001`," "`MyInApplicationStream_002`," and so on.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 32.  
Pattern: `[^-\s<>&]*`   
Required: Yes

 ** InputParallelism **   <a name="APIReference-Type-Input-InputParallelism"></a>
Describes the number of in-application streams to create.   
Type: [InputParallelism](API_InputParallelism.md) object  
Required: No

 ** InputProcessingConfiguration **   <a name="APIReference-Type-Input-InputProcessingConfiguration"></a>
The [InputProcessingConfiguration](API_InputProcessingConfiguration.md) for the input. An input processor transforms records as they are received from the stream, before the application's SQL code executes. Currently, the only input processing configuration available is [InputLambdaProcessor](API_InputLambdaProcessor.md).   
Type: [InputProcessingConfiguration](API_InputProcessingConfiguration.md) object  
Required: No

 ** KinesisFirehoseInput **   <a name="APIReference-Type-Input-KinesisFirehoseInput"></a>
If the streaming source is an Amazon Kinesis Data Firehose delivery stream, identifies the delivery stream's ARN.  
Type: [KinesisFirehoseInput](API_KinesisFirehoseInput.md) object  
Required: No

 ** KinesisStreamsInput **   <a name="APIReference-Type-Input-KinesisStreamsInput"></a>
If the streaming source is an Amazon Kinesis data stream, identifies the stream's Amazon Resource Name (ARN).   
Type: [KinesisStreamsInput](API_KinesisStreamsInput.md) object  
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/kinesisanalyticsv2-2018-05-23/Input) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/kinesisanalyticsv2-2018-05-23/Input) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/kinesisanalyticsv2-2018-05-23/Input)