I know that when going from 5.x.x to 6.x.x, there was an incompatible database change, which meant that the database couldn't be upgraded and had to be re-initialized.
Or, the approach that I took: have separate local databases for each version of dependency-check.
However, I have a hunch that I went too far off in the other end. I looked at core/src/main/resources/data and I didn't see any changes there since commit d632c1f1 (Breaking Changes (#2781), 7 September 2020, by Jeremy Long).
Is it possible for versions 6.0.0 -> 6.1.1 to connect to the same database? Or does each version require it's own database?