diff --git a/SQL/EHEC_DB_Query.sql b/SQL/EHEC_DB_Query.sql
index debfe12..2829fce 100644
--- a/SQL/EHEC_DB_Query.sql
+++ b/SQL/EHEC_DB_Query.sql
@@ -121,6 +121,7 @@ CREATE TABLE [dbo].[Exam] (
     [ExamId] int IDENTITY(1,1) NOT NULL,
     [DoctorId] int  NOT NULL,
 	[PatientId] int NOT NULL,
+    [OriginOriginId] int  NOT NULL,
     [Result_ResultId] int  NOT NULL
 );
 GO
@@ -237,6 +238,12 @@ ADD CONSTRAINT [FK_Origin]
     ON DELETE NO ACTION ON UPDATE NO ACTION;
 GO
 
+-- Creating non-clustered index for FOREIGN KEY 'FK_Origin_Exam'
+CREATE INDEX [IX_FK_Origin_Exam]
+ON [dbo].[Origin_Exam]
+    ([OriginOriginId]);
+GO
+
 -- Creating foreign key on [ExamId] in table 'Origin_Exam'
 ALTER TABLE [dbo].[Origin_Exam]
 ADD CONSTRAINT [FK_Exam]