data mode的用法和樣例：
例句
- This is useful when the client wants to display the status of data being received from the server.
這在客戶(hù)端需要顯示從服務(wù)器接收到的數據狀態(tài)時(shí)很有用。 - Applications using query notifications do not have to periodically verify the state of the data in the database.
使用查詢(xún)通知的應用程序不必定期驗證數據庫中的數據狀態(tài)。
