Dale
I would think that you'd have to look at the documentation for the specific drivers you're interested in. If they are
JDBC compliant then they should all have the same base functionality and any extra stuff they do should be documented by them.
The other option is to look at the code for the drivers but that could be a little tedious
You could also try looking at the DatabaseMetaData but that might be more database specific than driver specific.
hope that helps