How can data be written back into a table using DynamoDB streams?

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Data can be written back into a table using DynamoDB streams in the following way:

1. Create a Lambda function that will process the events received from the DynamoDB stream.
2. Configure the Lambda function to write the events back to the DynamoDB table using the PutItem API operation.
3. Configure the DynamoDB stream to trigger the Lambda function when a new event arrives.
4. When the DynamoDB stream triggers the Lambda function, the function will process the event and write the data back into the table using the PutItem API operation.

Note that when writing data back to the table using DynamoDB streams, it is important to ensure that you do not create infinite loops by triggering additional events that will trigger the Lambda function again. This can be prevented by implementing proper error handling and conditional logic in the Lambda function.