commiting some changes

RentACar/Data/Data/RentACarDbContext.cs

@@ -20,7 +20,7 @@ namespace Data
         {
             if (!optionsBuilder.IsConfigured)
             {
-                optionsBuilder.UseSqlServer("Server=.;Database=RentACar;Integrated Security=true;");
+                optionsBuilder.UseSqlServer("Server=.\\SQLEXPRESS;Database=RentACar;Integrated Security=true;");
             }
         }
 

RentACar/Data/Models/Car.cs

@@ -10,6 +10,7 @@ namespace Data.Entities
     public class Car
     {
         [Required]
+        [Key]
         public int Id { get; set; }
 
         [Required]