Re: why postgresql over other RDBMS

>> Indeed. Wouldn't it be a cool feature to persists transaction states
>> across connections so that a new connection could get access to a sub-
>> transaction state? That way, you could make your schema changes and
>> test them with any number of test clients (which designate the state
>> to connect with) and then you would commit when everything works.

    Actually you can hack this by starting your webserver with only 1 thread,
use persistent connections, and disable all commits in the application.
    But I'd call that "a very hackish hack".