diff --git a/Tiobon.Core.DataAccess/DataContext.cs b/Tiobon.Core.DataAccess/DataContext.cs
index a19bf11f..04c85e99 100644
--- a/Tiobon.Core.DataAccess/DataContext.cs
+++ b/Tiobon.Core.DataAccess/DataContext.cs
@@ -7,7 +7,7 @@ namespace Tiobon.Core.DataAccess
     {
 
 
-        public virtual DbSet<Ghra_Grade> Ghra_Grade { get; set; }
+        //public virtual DbSet<Ghra_Grade> Ghra_Grade { get; set; }
         public virtual DbSet<Ghre_Attachment> Ghre_Attachment { get; set; }
         public virtual DbSet<Ghre_ExamRecordDetail> Ghre_ExamRecordDetail { get; set; }
         public virtual DbSet<Ghre_ExamRecordAnswer> Ghre_ExamRecordAnswer { get; set; }