On the landing page, I think a simple hero diagram would be helpful because this appears to be an uncommon approach that mashes-up familiar terms.

I mean I have some familiarity with "dynamic websites" and "just SQL Queries" but no clear picture of the mechanics.

When I hit a landing page, my first questions are:

  What is it? 
  What does it do?
  Should I care about it enough to invest more time?

I clicked "try it out" but it didn't start to answer my questions...instead it asked me questions.

Anyway, Congratulations on launching. I know that's hard.