CodeIgniter 和 MSSQL

Question

I've started to construct my own db class; where should I put this new db.php file? Do I include('wherever/db.php') in the model from where I plan to run queries?

Answer 1

So something VERY obvious I just found was to use the sqlsrv not mssql db drivers as I was before resorting to writing my own db code. I was able resolve my main issue without having to write custom code for my database connection.

But thanks to the comments above by @Wolf and @DFriend, I learned so much more.