Welcome to my courses.
I've been working for more than 25+ years on software development in many programming languages (like C, C++, Java, C#, Python, PHP, etc.) and about 25+ years on SQL & PL/SQL programming using many different Oracle Technologies.
Currently, I work as a Project Manager on a huge database that has more than 20+ million active users, and at the same time, teaching SQL, PL/SQL, and many other programming languages such as Python, C, Java, and PHP programming, etc.