Just one word: triggers.
From the Class::DBI documentation:
__PACKAGE__->add_trigger(trigger_point_name => \&code_to_execute);
__PACKAGE__->add_trigger(after_create => \&call_after_create)
It is possible to set up triggers that will be called at various point
Triggers are the database way of running some extension code upon creating a record and Class::DBI tries to do it in a manner as similar as possible.
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