I worked on a greenfield project a couple of years ago. The company had an old solution written in Omnis (heard of it? Yeah, me neither) with an SQL database. My team was to create a completely new web based system... on top of the old database, so the customers could keep their existing stuff.

The dba was an intelligent man, one of the nicest people I've met, and over the course of fifteen years he had made a remarkably terrifying monstrosity of a database. Some years before me they wanted to "future proof" the system and make it "easier to switch to new technologies". So they moved the entire business logic into the database...

I used a tool to create a visualization of said database when we started. It had no views, only tables and sprocs. Look at it! Tables and sprocs are rectangles (well, dots) and any connections are drawn in grey lines. There were no foreign keys, so a tables only visualization only yielded a collection of independent rectangles without a single line.

Now, the stored procedures were bloody MASSIVE. A single procedure that only registered a new interested party and attached them to a property had 2500+ lines and over 150 parameters.

Also, this dba added features and fixed bugs by logging into the respective customers production server and writing SQL.

That database is the stupidest thing I've ever seen a developer do.