#鸿蒙学习大百科#键值型数据库如何实现备份功能？

let kvStore: distributedKVStore.SingleKVStore | undefined = undefined;//kvStore获取步骤省略
let backupFile = 'BK001';
try {
  //backup接口实现数据库备份
  kvStore.backup(backupFile, (err) => {
    if (err) {
      console.error(`Fail to backup data.code:${err.code},message:${err.message}`);
    } else {
      console.info('Succeeded in backupping data.');
    }
  });
} catch (e) {
  let error = e as BusinessError;
  console.error(`An unexpected error occurred. Code:${error.code},message:${error.message}`);
}