The key declares that an index in one table is related to that in another is called _____________(a) primary(b) secondary(c) foreign(d) crossI got this question by my college professor while I was bunking the class.My question is from Perl DBI Overview topic in portion MySQL Programs Using Perl DBI and PHP of MySQL

The key declares that an index in one table is related to that in anot

1.	The key declares that an index in one table is related to that in another is called _____________(a) primary(b) secondary(c) foreign(d) crossI got this question by my college professor while I was bunking the class.My question is from Perl DBI Overview topic in portion MySQL Programs Using Perl DBI and PHP of MySQL
Answer» CORRECT OPTION is (c) foreign Explanation: In MYSQL, a foreign key is the one that facilitates index RELATIONS across tables. It declares that an index in one table is related to that in another and PLACE constraints.

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