Transactions - How the DBI helps
		l Tools of the trade: n Set AutoCommit off, and RaiseError on n Wrap eval { … } around the code n Use $dbh->commit; and $dbh->rollback; l Disable AutoCommit via $dbh->{AutoCommit} = 0; – to enable transactions and thus rollback-on-error l Enable RaiseError via $dbh->{RaiseError} = 1; – to automatically 'throw an exception' on error l The surrounding eval { … } – catches the exception and puts the error message into $@ l Test $@ and rollback() if set, else commit()
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