Theoretically this works in small systems, but when you're talking about trying to manage nearly 400,000,000 records, it can quickly get out of hand and data wi

Theoretically this works in small systems, but when you're talking about trying to manage nearly 400,000,000 records, it can quickly get out of hand and data will go bad fast. It's something that is easily implemented on a small(er) scale, but not really a national one. I've worked with systems that size and it's never as easy as you'd want it to be because of the sheer magnitude of the data and the number of people updating it on a regular basis.