Please assist with these two questions.

1. Modern relational database management systems have been around for a relatively short period of time. As time goes by, more and more emphasis has been placed on design issues, especially database modeling. What is the reason for this increased emphasis?

2. Wheaton's (2007) article states five "commandments" (i.e. best practices) for data management. Pick one of the commandments from below, explain it and the rationale for it, and then discuss a data example from your current or previous workplace that illustrates the importance of that commandments