CCADO in AX 2012

In AX 2012, the CCADO classes have been entirely removed, and I’m just looking for someone to point me in the right direction in terms of what they’re been replaced with. I am moving a mod up from an AX 4.0 environment to an AX 2012 environment, and it uses CCADO objects extensively to call out to a staging database. What is the proper solution to this in AX 2012?

You can use the .Net classes from System.Data.SqlClient.*