D. Richard Hipp has mentioned that SQLite and the TH3 test suite were heavily inspired by DO-178B, but none of the core SQLite developers have been involved in

D. Richard Hipp has mentioned that SQLite and the TH3 test suite were heavily inspired by DO-178B, but none of the core SQLite developers have been involved in a DO-178B certification nor has anyone purchased the TH3 test suite. Furthermore, SQLite by its nature is not fit for hard real-time systems since it cannot guarantee the execution time of an arbitrary query and/or an arbitrary dataset. I don't mean to disparage SQLite in any way, it is quite the achievement, but your characterization is mistaken.