Programming the Perl DBI

Databases in which a transaction must be explicitly started

For these databases, the intention is to have them act like databases in which a transaction is always active (as described earlier).

To do this, the DBI driver will automatically begin a transaction when AutoCommit is turned off (from the default “on” state) and will automatically begin another transaction after a commit or rollback. In this way, the application does not have to treat these databases as a special case.

See disconnect for other important notes about transactions.