What does Understanding Database Servers mean?

Question

Career in IT

I found a vacancy where it says that in addition to basic knowledge of SQL, you need "Understanding the operation of database servers."
What is meant by this?

Answer 1

And hell knows.
From "I know the difference between JOIN and SELECT" to "I know how to install and administer MSSQL".

Answer 2

Ask them.
If there was administration of a DBMS - that would write so.

Answer 3

Installation, configuration, administration.