什么是简单的命令行程序或脚本来备份SQL Server数据库？

import os
import shutil
import sqlserverutils

# 连接 SQL Server 数据库引擎
db_engine = sqlserverutils.connect_sqlserver_engine()

# 设置数据库备份的目标路径
target_path = "backup_path"

# 获取数据库对象
database = db_engine.execute_query("SELECT * FROM INFORMATION_SCHEMA.SCHEMATA WHERE schema_name = 'your_database_name'")
db_schema_name = database[0]['schema_name']
backup_path = os.path.join(target_path, db_schema_name)

# 如果备份目录不存在，则创建目录
if not os.path.exists(backup_path):
    os.makedirs(backup_path)

# 批量备份所有的数据表
for table in database:
    # 连接到具体的数据库表
    table_engine = db_engine.execute_query("SELECT * FROM ".format(table=table['name']))
    rows_count = table_engine[0]['__ROWCOUNT']
    rows = table_engine[0]['rows']

    # 将数据表的数据逐行读入到文件
    for row in rows:
        for field in row.keys():
            if isinstance(row[field], bytes):
                row[field] = row[field].decode('utf-8')

        with open(os.path.join(backup_path, table["name"] + ".csv"), mode="w", newline='') as file:
            writer = csv.writer(file)
            writer.writerow(row.keys())
            writer.writerows(row.values())
    
    print(f"备份完成 ( 行)")

# 释放数据库连接
db_engine.close()

# 导入相关模块
Import-Module sqlserver

# 连接服务器并选择数据库引擎
Connect-SqlServer -ServerInstance <SQL instance name> -Database Edition 'Basic' | Out-Null
$db_engine = Get-SqlDatabase -ServerInstance <SQL instance name> -DatabaseName<database name> | %

# 设置数据库备份的目标路径
$target_path = "C:\backups"

# 获取数据库对象
$database = $db_engine.ExecuteReader("SELECT * FROM INFORMATION_SCHEMA.SCHEMATA WHERE schema_name = 'your_database_name'")
$db_schema_name = $database.schema_name
$backup_path = Join-Path -Path $target_path -ChildPath $db_schema_name

# 如果备份目录不存在，则创建目录
if (!(Test-Path $backup_path)) 

# 批量备份所有的数据表
$tables = $database | Select-Object name
$count = 0
foreach ($table in $tables) 
            
        }
    }
}