CREATE TABLE Products

(

ProductID NUMBER NOT NULL,

ProductName VARCHAR2(40) NOT NULL,

QuantityPerUnit VARCHAR2(20),

UnitPrice NUMBER,

UnitsInStock NUMBER,

UnitsOnOrder NUMBER,

ReorderLevel NUMBER,

Discontinued NUMBER(1) NOT NULL,

CONSTRAINT PK_Products

PRIMARY KEY (ProductID),

CONSTRAINT CK_Products_UnitPrice CHECK ((UnitPrice >= 0)),

CONSTRAINT CK_ReorderLevel CHECK ((ReorderLevel >= 0)),

CONSTRAINT CK_UnitsInStock CHECK ((UnitsInStock >= 0)),

CONSTRAINT CK_UnitsOnOrder CHECK ((UnitsOnOrder >= 0)))

/

I have provided SQL code to create all tables and insert all data. There is an error in setting referential integrity: one of the tables is missing references. Read the code and identify the problem. You can either modify create table statement or add alter table statement to include missing references