[otrs] installing with a postgresql backend

Is the only thing needed to use OpenTRS with a Postgresql backend a successful translation of OpenTRS-schema.mysql.sql ? In other words, are there any functions/schemas or other definitions that are MySQL dependent? If not, is anyone using the currrent otrs-0.5-BETA5.tar.gz (which is tar'ed but apparently not gzipped) with Postgresql? -Eddie