# MetadataKeyValuePair
<a name="API_MetadataKeyValuePair"></a>

A structure containing a key value pair for metadata.

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

 ** MetadataKey **   <a name="Glue-Type-MetadataKeyValuePair-MetadataKey"></a>
A metadata key.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[a-zA-Z0-9+-=._./@]+`   
Required: No

 ** MetadataValue **   <a name="Glue-Type-MetadataKeyValuePair-MetadataValue"></a>
A metadata key’s corresponding value.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 256.  
Pattern: `[a-zA-Z0-9+-=._./@]+`   
Required: No

## See Also
<a name="API_MetadataKeyValuePair_SeeAlso"></a>

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/glue-2017-03-31/MetadataKeyValuePair) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/glue-2017-03-31/MetadataKeyValuePair) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/glue-2017-03-31/MetadataKeyValuePair)