PEAR DB and DB_ado

I'm confused... I thought the idea behind PEAR DB was to solve the problem of having 100 different database APIs for PHP. PEAR DB should provide us with a common way of accessing different databases. But here comes DB_ado - doesn't that give us yet another way of accessing databases? I realize that DB_ado extens DB_common. What I can't figure out from looking at the source code is whether DB_ado requires a different syntax than PEAR DB - and if is does, why has the PEAR community accepted it, if the point of PEAR DB was to give the PHP coders the common database API we've all been waiting for? This is not a retorical question. Like I said, I can't really figure out from looking at the source code whether DB_ado requires a new syntax or not. -- Jonas Koch Bentzen