Propagating constraints to the backend

[tobsecret]

We are currently looking at teable and similar projects, and this is so far the first one we have tested that does a good job at enforcing uniqueness. However, it only seems to be enforcing this on the front end. We are using postgres as a back end and do not see any constraints pop up when we enforce uniqueness for a column. This matters to us because we want to both have users be able to interact safely with the frontend and be able to safely do mass uploads directly to the database.