As part of my research, I'm also building a new UI for exploring a database using data visualizations and an ER diagram. Here is a half-baked demo: http://mondial.kyrixdemo.live/
Hopefully the UI is self-explanatory - if not try clicking on visual objects to perform drill down, or search something in the top righthand corner.
This is fantastic, thanks for sharing! The unique ability to drill down into connected tables and visualize the relationships and data within is unique (for me at least). Are you building this as a personal tool or building it in a manner to apply on any database? Would love to know more
It's intended to support general relational databases. But right now the code is kind of hacky with little documentation. We wrote a paper on it but it's still under review.