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Foreign keys can handle deletes and updates.(a) True(b) FalseThe question was posed to me in a job interview.I would like to ask this question from Perl DBI Overview in chapter MySQL Programs Using Perl DBI and PHP of MySQL

Answer»

Correct answer is (a) True

To explain I would say: A FOREIGN key is the one which declares that an index in one table is related to that in another and PLACE constraints. It is useful for HANDLING deletes and updates ALONG with row entries.



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