how to solve this- Cannot delete or update a parent row: a foreign key constraint fails

how to solve this- Cannot delete or update a parent row: a foreign key
constraint fails

References

Reference NO 1

http://stackoverflow.com/questions/3334619/cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails

Reference NO 2

http://stackoverflow.com/questions/3334619/cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails

Reference NO 3

http://stackoverflow.com/questions/3334619/cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails

Reference NO 4

http://www.daniweb.com/web-development/databases/mysql/threads/167078/foreign-key-constraint-fails

Reference NO 5

http://freelance-it-consultant.com/blog/mysql-error-while-dropping-tables-cannot-delete-or-update-parent-row-foreign-key-constraint-fai

Reference NO 6

http://www.dreamincode.net/forums/topic/282881-%231451-cannot-delete-or-update-a-parent-row-a-foreign-key-constraint/

Reference NO 7

http://www.yodi.sg/solve-mysql-cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails-innodb-when-drop-table/

Reference NO 8

https://www.zabbix.com/forum/showthread.php?t=27025