I have a lot of respect for Jin and Philip, but I have to disagree that the ACS is just the data model and SQL. I understand the desire here, because that gives it an SAP'ish sense, and SAP is worth a lot of money. The ACS also defines a number of processes, a flow through the data model and SQL. These processes are implemented in Tcl, and while one can surely call that "plumbing," it's pretty vital plumbing.
Also, if the Tcl really is just plumbing, then I sure hope that Arsdigita will start abstracting out the *real* ACS from this "plumbing" ... such is not even close to the case right now....
