A few moments ago, near the top of the Homepage, I found a question having only database. It was a question about the syntax of WP_Query object. The question is closed. I agree with that.
I mention the above as the context of why I am posting this now. It looks to me that this tag is one among others that confuse the scope of Web Applications SE, making some people think that questions about Web app development and administration are on-topic when they aren't.
database has 31 questions. 16 of those questions are closed.
The all-time top answerers based on the number of answers are top answerers of google-sheets. Both have three answers (I'm one of them). All other all-time answerers have posted only one answer.
Is there an active expert using database to find questions to answer?