Database design and software development consultant. My clients included everything from Fortune 100 companies to non-profits and mom-and-pop companies. I've worked with SQL databases since 1985. I'm a database generalist; I'm comfortable with every modern SQL dbms. My home server runs a half-dozen different database management systems. I test most of my answers under more than one of them.
I've developed relational models for implementation in non-SQL environments, like Lotus Notes and plain C++ code.
I also develop software in C, VBA, Python, Ruby, and php. I build web applications using various frameworks and languages, including Ruby on Rails, Laravel, and Phalcon.