Hi,
Should I or shouldn't I explicitly specify the foreign
key in Mysql? If I am not mistaken, Mysql handles
foreign keys automatically at query time and we need
not explicitly specify the foreign key.
But, will the database detect error when I enter
non-existent value for a foreign key?
Do I need to explicitly specify foreign key when
creating table?
If I have to, can I use Alter table to modify table
that has been already created?
Thanks,
Sanjay Chigurupati
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