text: SELECT * FROM owners;
  SELECT * FROM estates;
  
  -- Attempt to insert data without referential integrity
  INSERT INTO estates
  (estate_id, owner_id, address, city, state, zip_code)
  VALUES
  (9, 10, '23 Delafield Avenue', 'New Brunswick', 'NJ', 08901);
  
  -- Insert new record into owner table
  INSERT INTO owners
  (owner_id, first_name, last_name)
  VALUES
  (10, 'David', 'Stone');
  
  -- Re-attempt to insert data with referential integrity
  INSERT INTO estates
  (estate_id, owner_id, address, city, state, zip_code)
  VALUES
  (9, 10, '23 Delafield Avenue', 'New Brunswick', 'NJ', 08901);
  
  -- Select all columns from joined table
  SELECT *
  FROM owners
  INNER JOIN estates ON owners.owner_id = estates.owner_id;
  
  -- select explicit columns from joined table
  SELECT
    owners.first_name,
    owners.last_name,
    estates.address,
    estates.city,
    estates.state,
    estates.zip_code
  FROM owners
  INNER JOIN estates ON owners.owner_id = estates.owner_id;
  
  -- BONUS
  SELECT * FROM estate_type;
  SELECT * FROM estates_new;
  
  -- Join all three tables
  SELECT *
  FROM owners
  INNER JOIN estates_new ON owners.owner_id = estates_new.owner_id
  INNER JOIN estate_type ON estates_new.estate_type_id = estate_type.estate_type_id;
  