Update model

Elwig/Models/WbKg.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Elwig.Models {
@@ -11,6 +12,18 @@ namespace Elwig.Models {
         public int? GlNr { get; set; }
 
         [ForeignKey("KgNr")]
-        public virtual AT_Kg Kg { get; private set; }
+        public virtual AT_Kg AtKg { get; private set; }
+
+        [ForeignKey("GlNr")]
+        public virtual WbGl Gl { get; private set; }
+
+        [InverseProperty("Kg")]
+        public virtual ISet<WbRd> Rds { get; private set; }
+
+        [NotMapped]
+        public WbGem Gem => AtKg.Gem.WbGem;
+
+        [NotMapped]
+        public WineOrigin Origin => Gem.Origin;
     }
 }