A few months ago we started development on a new system. From the ground up we redesigned everything from our business processes to how we store data. Part of the redesign was deciding on using SOA technology in our middle tier. This will allow us to separate our UI from our middle tier even further. Due to the disconnected way our objects were going to work we decided to use guid or unique identifiers for our primary keys in our data model and assign guids in the middle tier. Of course, our DBAs weren't too keen on the idea and...