Hi Laszlo - thanks for your feedback although I still don't know what your experience was. It is always interesting to be so certain about good an bad ideas - perhaps you could help me be equally certain by clarifying the meaning of 'Node.JS is non-blocking and modern. Those databases are based on old data structures and old schemes so they are way slower than what node can do' - I genuinely don't understand.
When last I looked there seemed more than a few users of Microsoft's MS SQL Server - check this out: db-engines.com/en/ranking