diff --git a/Chinook_Rev1.sql b/Chinook_Rev1.sql
index 0ac5af5..36a8186 100644
--- a/Chinook_Rev1.sql
+++ b/Chinook_Rev1.sql
@@ -1,4 +1,4 @@
-USE `Chinook`;
+USE `chinook`;
 
 
 /*******************************************************************************
@@ -88,6 +88,12 @@ CREATE TABLE `TrackURL`
 );
 
 
+/*******************************************************************************
+   ALTER TABLES
+********************************************************************************/
+
+ALTER TABLE customer ADD PersonID INT NOT NULL;
+ALTER TABLE employee ADD PersonID INT NOT NULL;
 
 /*******************************************************************************
    Create Primary Key Unique Indexes
@@ -107,6 +113,9 @@ ALTER TABLE `CreditCard` ADD CONSTRAINT `FK_CreditCardPayId`
 
 CREATE INDEX `IFK_CreditCardPayId` ON `CreditCard` (`PayId`);
 
+ALTER TABLE `Customer` ADD CONSTRAINT `FK_CustomerPersonId`
+	FOREIGN KEY (`PersonId`) REFERENCES `Person` (`PersonId`) ON DELETE NO ACTION ON UPDATE NO ACTION;
+
 CREATE INDEX `IFK_CustomerPersonId` ON `Customer` (`PersonId`);
 
 ALTER TABLE `Employee` ADD CONSTRAINT `FK_EmployeePersonId`