Hi again kimdav,
There is no command "DELETE DATABASE", but only "DROP DATABASE".
You DELETE rows from a table for example, but you DROP a table or DATABASE
When you CREATE entity (like table, or database) then you can
ALTER it or DROP it - define the database (DDL = Data Definition Language).
When you INSERT data then you can UPDATE it or DELETE it - manipulating the data (DML = Data Manipulation Language).
The command "SHOW DATABASES" does not work on SQL Server but on servers like mariadb, MySQL, and so on
In SQL Server you can use:
SELECT * FROM sys.databases