use ae
db.createCollection(t_user);
db.t_user.insertMany(
{
    "name" : "tom",
    "address" : "ny",
    "telnum" : "911",
    "datajoin" : "2022-1-1",
    "money" : "1000"
}
{
    "name" : "jack",
    "address" : "london",
    "telnum" : "119",
    "datajoin" : "2022-3-1",
    "money" : "2000"
}
);
db.createCollection(t_orders);
db.t_orders.insertMany(
{
    "uid" : "63b67618b383e8070e7a7e8a",
    "create_time" : "2023-1-5-15:34",
    "tile" : "math",
    "author" : "yinjie zhang",
    "genre" : "academic",
    "publisher" : "aaa",
    "release_date" : "2030-1-1",
    "price" : "100",
    "stock_amount" : "0.01",
    "blob" : "null",
    "invoice_id" : "123"
}
{
    "uid" : "63b67618b383e8070e7a7e8a",
    "create_time" : "2023-1-5-16:34",
    "tile" : "English",
    "author" : "yinjie zhang",
    "genre" : "academic",
    "publisher" : "aaa",
    "release_date" : "2030-1-1",
    "price" : "100",
    "stock_amount" : "0.01",
    "blob" : "null",
    "invoice_id" : "111"
}
);
db.createCollection(t_commodity);
db.t_commodity.insertMany(
{
    "commodity_discription" : "Math,author:yinjie zhang,genre:acdamic,publisher:aaa,release_date:2030-1-1,price:100",
    "commodity_flag" : "true",
    "commodity_num" : "1000",
    "commodity_picture" : "D:picture"
}
{
    "commodity_discription" : "English,author:yinjie zhang,genre:acdamic,publisher:aaa,release_date:2030-1-1,price:100",
    "commodity_flag" : "true",
    "commodity_num" : "1000",
    "commodity_picture" : "D:picture"
}
);