Database driver API?

[eluser]bluematt[/eluser]
Hi, CI folks.

Is there a guide (e.g. on the wiki) as to what internal functions are expected to be handled/overridden by a new database driver? I'm working on a SQLite3 specific driver (sadly only PHP5) as the PDO driver gave me too much grief, and some of the SQL is now outdated. I've covered most of my own uses, but I'm sure I'm missing something...

Or if there's a DB test suite I can run it against, that would be handy.

Thanks.