Creates a backup for an existing table.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/dynamodb/create-backup.html
aws dynamodb create-backup --table-name MusicCollection \ |
Backing Up a DynamoDB Table - Amazon DynamoDB : http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Backup.Tutorial.html |