diff --git a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Order.cs b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Order.cs
index 428f670..966a181 100644
--- a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Order.cs
+++ b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Order.cs
@@ -18,7 +18,7 @@ namespace ElectronicsShopDataBaseImplement.Models
         public int ID { get; set; }
         [Required]
         public double Sum { get; set; }
-        [Required]
+        [ForeignKey("UserID")]
         public int UserID { get; set; }
         [Required]
         public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
diff --git a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/OrderProducts.cs b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/OrderProducts.cs
index 11a056e..2365706 100644
--- a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/OrderProducts.cs
+++ b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/OrderProducts.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -11,10 +12,10 @@ namespace ElectronicsShopDataBaseImplement.Models
     {
         public int ID { get; set; }
 
-        [Required]
+        [ForeignKey("OrderID")]
         public int OrdersID { get; set; }
 
-        [Required]
+        [ForeignKey("ProductID")]
         public int ProductID { get; set; }
 
         [Required]
diff --git a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Product.cs b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Product.cs
index 9bcbbfe..414403a 100644
--- a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Product.cs
+++ b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/Product.cs
@@ -4,6 +4,7 @@ using ElectronicsShopDataModels.Models;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -17,7 +18,7 @@ namespace ElectronicsShopDataBaseImplement.Models
         public string ProductName {  get; set; }=string.Empty;
         [Required]
         public double Price { get; set; }
-        [Required]
+        [ForeignKey("CategoryID")]
         public int CategoryID {  get; set; }
 
         public static Product? Create(ProductBindingModel? model)
diff --git a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/User.cs b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/User.cs
index 3dcdec3..12405c9 100644
--- a/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/User.cs
+++ b/ElectronicsShop/ElectronicsShopDataBaseImplement/Models/User.cs
@@ -4,6 +4,7 @@ using ElectronicsShopDataModels;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -25,7 +26,7 @@ namespace ElectronicsShopDataBaseImplement.Models
         public string Login { get; set; } = string.Empty;
         [Required] 
         public string Email { get; set; } = string.Empty;
-        [Required]
+        [ForeignKey("RoleID")]
         public int RoleID { get; set; }
 
         public static User? Create(UserBindingModel model)