For anything but the simplest web site, you will have to store data somewhere. Fortunately, data storage is a problem that has been worked on since the earliest computers were designed, and there have been many decades of research into the best ways of storing and retrieving data of all types, at scales ranging from small product catalogues to industrial systems tracking and storing millions of variables and events per second.
Your data is often the most valuable asset belonging to your organization, not only because it helps you meet your goals, but because of the potential cost to you if ...