Hi,

> How Firebird does commit/rollback processing internaly?
>
> Which is faster: commit or rollback?

If you're doing a ROLLBACK while nothing has changed,
Firebird will actually do a COMMIT instead.

With regards,

Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server.
Upscene Productions
http://www.upscene.com