1 files changed, 5 insertions, 3 deletions
diff --git a/Tag.cs b/Tag.cs
index 81c5f67..0150b39 100644
--- a/Tag.cs
+++ b/Tag.cs
@@ -18,9 +18,11 @@ public class TagDefinition : HBObject {
 }
 
 public class Tag : HBObject {
-    public virtual TagDefinition TagDefinition { get; set; }
-    public         DateTime      CreateTime    { get; set; } = DateTime.UtcNow;
-    public virtual HBObject      Target        { get; set; }
+    [ForeignKey("ObjectId")]
+    public         int           TagDefinitionId { get; set; }
+    public virtual TagDefinition TagDefinition   { get; set; }
+    public         DateTime      CreateTime      { get; set; } = DateTime.UtcNow;
+    public virtual HBObject      Target          { get; set; }
 
     public Tag() {}