#鸿蒙学习大百科#如何对关系型数据的db文件进行备份？

if(store != undefined) {
    //使用backup()方法备份数据。
  (store as relationalStore.RdbStore).backup('dbBackup.db', (err) => {
    if (err) {
      console.error(`Failed to backup data. Code:${err.code},message:${err.message}`);
      return;
    }
    console.info('Succeeded in backuping data.');
  })
}