ApiShoppingList/API/DBModel/ProductInShopList.cs

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace API.DBModel
{
    [Table("ProductInShopList")]
    public class ProductInShopList
    {
        [Key]
        public int Id { get; set; }

        [ForeignKey("FK_ProductInShopList_shopping_lists")]

        public int id_shop_list { get; set; }

        [ForeignKey("FK_ProductInShopList_shopping_list_items")]

        public int id_product { get; set; }

        public double quantity { get; set; }

        public bool completed { get; set; }
    }
}