问(数据库设计，mysql)我的数据库设计适合基本购物车吗？(我是数据库设计新手)

EN

//table that holds shopping cart items that customer choose(not press checkout and order //them)

**shopping_cart**
{
id (int)
product_id (int) fk
product_quantity (int)
customer_user_id (int) fk 
}

//table that holds product order data in time of checkout.(i hold them because supplier //can change after time products attributes value add some attributes or delete and change //the price of product)

**order**
{
id (int)
product_id (int)  fk
customer_user_id (int)  fk
}


//table that connect order  to attribute table for products attributes value in the moment //of   checkout

**order_attributes**
{
id (int)
order_id (int)  fk
attribute_id (int)  fk
}

//main product table
**product**
{
id (int)
sku (int) 
product_name (varchar)
supplier_user_id (int)  fk
}

//connection table many to many 
**product_attributes**
{
id (int) 
product_id (int)  fk
attribute_id (int)  fk
}

//table that holds products attributes (price, weight, color + new attributes that user //will create)

**attribute**
{
id (int)
product_id (int)  fk
attribute_name (varchar)
attribute_value(varchar)
}