如何删除数据库中的冗余数据（翻译）

如何删除数据库中的冗余数据（翻译） (3)    VALUES (1006, 'Monroe', 'John', '122 West Ave.',
           'Phoenix', 'AZ', '85004', '9252997100',
           TO_DATE('02-OCT-2000', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1007, 'Lord', 'Don', '573 Hill View',
           'Atlanta', 'GA', '30303', '3036578900',
           TO_DATE('12-DEC-2000', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1008, 'Griffith', 'David', '10 Fulton Rd. Apt.4',
           'San Francisco', 'CA', '94121', '7236578900',
           TO_DATE('15-DEC-1999', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1009, 'Simon', 'Michael', '573 Hill View',
           'Santa Monica', 'CA', '90402', '8185689200',
           TO_DATE('22-MAY-1999', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1010, 'Simon', 'Michael', '573 Hill View',
           'Santa Monica', 'CA', '90402', '8185689200',
           TO_DATE('02-OCT-1999', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1011, 'Stone', 'Tony', '12 Main St. Apt. 3',
           'Oakland', 'CA', '94342', '5104562881',
           TO_DATE('07-DEC-1999', 'DD-MON-YYYY'));

INSERT INTO Customers
   VALUES (1012, 'Krieger', 'Jeff', '120 Mercury Rd.',
           'San Ramon', 'CA', '95114', '9252997100',