data saved as AS11a.txt
1st Record: id  record# full name   address
2nd Record: id  record# birthdate
1001 1  James H. Jones  114 Singleton Ave.
1001 2  9/15/52
1002 1  Jane Mc Nivvon  Apt #2, Spring Street
1002 2  4/4/65
1003 1  Jacob Singh  unknown
1003 2  1/1/60
1004 1  Hong Wang  123, West Street
1005 1  Henry P. Slate  111 Apt #1, Maple Ave.
1005 2  4/4/99