And how many programs need to be complex? Most systems are better off when built from a number of simple components, communicating via text protocols. If multip

And how many programs need to be complex? Most systems are better off when built from a number of simple components, communicating via text protocols. If multiple entities want to store data in the same place, most likely you're doing something wrong. I very rarely met things that really needed a database. And in most such cases it was not really a RDBMS. For example, a CAD needs a hierarchical database, relational does not fit there at all.