Senior software engineer focused on C, C++, STL, SQL. If it ever hoped to manage data, I've probably used it, enhanced it, and optimized it. I've spent the bulk of my career writing budgeting, forecasting, and derivatives models for regional and Wall St banks.
I've used every kind of dbms dreamed up over the last 25 years, and wrote a couple of my own. A temporal database, and an In-Memory database.
Have used Hierarchical, Network/BOM, Relational, Object, Object-Relational and even Informix back when it was just an ISAM. Currently focused on complex, real-time watch-dog apps using C++ and the STL for a telco.