diff --git a/Cruise.sql b/Cruise.sql
index 148cd4f..e93ad2a 100644
--- a/Cruise.sql
+++ b/Cruise.sql
@@ -14,7 +14,9 @@ CREATE TABLE Customer(
 	lastName VARCHAR2(15),
 	address VARCHAR2(30),
 	phone NUMBER(10),
-	CONSTRAINT Customer_pk PRIMARY KEY(customerID)
+	CONSTRAINT Customer_pk PRIMARY KEY(customerID),
+	CONSTRAINT Customer_U1 UNIQUE(firstName, lastName, phone),
+	CONSTRAINT Customer_phoneNumber_Val CHECK (phone IS NOT NULL)
 );
 CREATE SEQUENCE customerID_seq;