Thanks for the pointer. This kind of documentation is what I was looking for, even if the discussion of bind variables is a bit misleading. (One uses Oracle bind variables for performance and scalability, not a strange kind of security.) In any case, though, the list of functions is very helpful.
In the OACS 4 environment, database abstraction is pretty critical, since multiple databases are supported. I assumed the db_
calls were preferred, but I didn't relish the thought of digging through to figure them all out.