用户表：user

id:1  | name:xiaowang  | iphone:17734343434  | record:[{name:P33},{name:U590}]
id:2  | name:zhangshan | iphone:18734231231| | record:[{name:U590}]

商品表：goods
id:1  | name:P33       |pice:150     
id:2  | name:U590      |pice:350

订单表：order
id:1  | name:xiaowang  | record:[{name:P33},{name:U590}]
id:2  | name:zhangshan | record:[{name:U590}]

如有5000个用户，每个用户购买不同的商品

问：每个用户购买的商品数据放在user表record字段里好，还是单独放在order表里？