I succeeded in installing the TinyOWS software and setting up the transactional WFS.
However, I have an extra requirement: All data layers must be available in 3 projections: EPSG:3857, EPSG:3067, EPSG:4326.
Right now each table has a column the_geom with coordinates in the Finnish projection EPSG:3067.
What would you recommend to add the support for the other projections? Does the server like TinyOWS do "on the fly" re-projection on each request, or do I need to add extra geometry columns with coordinates in the other projections to each of my tables?