Adds or removes replicas in the specified global table.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/dynamodb/update-global-table.html
| aws dynamodb update-global-table \ |
| Creating a Global Table - Amazon DynamoDB : http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/globaltables.tutorial.html |