text: DROP TABLE Numbers;
  DROP TABLE Orders;
  DROP TABLE Inventory;
  
  CREATE TABLE Numbers
  (
      item     INT,
      quantity INT
  );
  
  CREATE TABLE Orders
  (
      orderID  INT PRIMARY KEY,
      itemID   INT,
      quantity INT
  );
  
  CREATE TABLE Inventory
  (
      itemID   INT NOT NULL PRIMARY KEY,
      quantity INT NOT NULL
  );
  
  INSERT INTO Inventory
  VALUES (1, 100);
  
  INSERT INTO Numbers
  VALUES (1, 10);
  
  INSERT INTO Numbers
  VALUES (2, 10);
  
  INSERT INTO Numbers
  VALUES (3, 10);
  
  INSERT INTO Numbers
  VALUES (4, 10);
  
  INSERT INTO Numbers
  VALUES (5, 10);
  
  INSERT INTO Numbers
  VALUES (6, 10);
  
  INSERT INTO Numbers
  VALUES (7, 10);
  
  INSERT INTO Numbers
  VALUES (8, 10);
  
  INSERT INTO Numbers
  VALUES (9, 10);
  
  INSERT INTO Numbers
  VALUES (10, 10);
  
  INSERT INTO Numbers
  VALUES (11, 10);
  
  INSERT INTO Numbers
  VALUES (12, 10);
  
  INSERT INTO Numbers
  VALUES (13, 10);
  
  INSERT INTO Numbers
  VALUES (14, 10);
  
  INSERT INTO Numbers
  VALUES (15, 10);
  
  INSERT INTO Numbers
  VALUES (16, 10);
  
  INSERT INTO Numbers
  VALUES (17, 10);
  
  INSERT INTO Numbers
  VALUES (18, 10);
  
  INSERT INTO Numbers
  VALUES (19, 10);
  
  INSERT INTO Numbers
  VALUES (20, 10);
  