[heelix]

My Bride worked for a banking/credit card company. Someone took the sample "northwinds" Microsoft Access sample app, changed the labels, and modified their business process to mimic a few of the existing queries. At some point, there was a company mandate to port all of these types of apps to Oracle. Oh, the huge manatee... The process/business was a non-trivial bit of cash flow.

There has always been a bit of back and forth. Giving long deadlines and crazy costs, the business will always kruft something together. Sometimes it works, sometimes folks get burned, sometimes you get a nice hand off.