INSERT INTO Team (
    team_id,
    conference,
    name,
    city
)

VALUES
    (
        '15',
        'Western',
        'Los Angeles Lakers',
	  'Los Angeles'),

		('16',
		 'Western',
		 'Denver Nuggets',
		 'Denver'
		),
		('17',
		 'Western',
		 'Utah Jazz',
		 'Utah'
		),
		('18',
		 'Western',
		 'Los Angeles Clippers',
		 'Los Angeles'
		),

		('19',
		 'Western',
		 'Dallas Mavericks',
		 'Dallas'
		),
		('20',
		 'Western',
		 'Houston Rockets',
		 'Houston'
		),
		('21',
		 'Western',
		 'Oklahoma City Thunders',
		 'Oklahoma City'
		),
		('22',
		 'Western',
		 'Memphis Grizzlies',
		 'Memphis'
		),
		('23',
		 'Western',
		 'San Antonio Spurs',
		 'San Antonio'
		),
		('24',
		 'Western',
		 'Portland Trail Blazers',
		 'Portland'
		),
		('25',
		 'Western',
		 'Charlotte Hornets',
		 'Charlotte'
		),
		('26',
		 'Western',
		 'Phoenix Suns',
		 'Phoenix'
		),
		('27',
		 'Western',
		 'New Orleans Pelicans',
		 'New Orleans'
		),
		('28',
		 'Western',
		 'Minnesota Timberwolves',
		 'Minnesota'),

		 ('29',
		 'Western',
		 'Sacramento Kings',
		 'Sacramento'),

		  ('30',
		 'Western',
		 'Golden State Warriors',
		 'Golden State');


Useful commands:

ALTER TABLE Coach
DROP COLUMN bdate;

ALTER TABLE Customers
ADD Email varchar(255);


Coach : 30
Company : 30
Arena : 30
Teams : 30
Game :
Ticket :
Customer :
Player :
NBAChampion :
Artist :