[arcbyte]

Youre proving my point.

Saving the whole file or not is an architectural decision involving cost tradeoffs, technology capabilities, and business strategy.

Which data points you put in your OLTP is the data model and, as you just painted an example of, throwaway when the use cases change. Later you'll want different data points or different relations. And then you'll evolve your data model yo serve that. If you did your architecture right, it will change much less than the data in your databases.