In order to connect our operting system with our db we need to register the installation path from MySQL in the variables of Windows.
find the installation path of MySQL > bin and copy it, e.g. „C:\Program Files\MySQL\MySQL Server 8.0\bin“
Press WINDOWS-Button + env
Select the Button „Umgebungsvariablen“, which is located on the bottom of the presented window.
Create a new Variable by pressing the „Neu“ Button.
Add PATH + the copied path of MySQL/bin + Save the new enviroment variable
Open a cmd-box (commandline) and connect to the database with your database credentials by typing: „mysql -u root -p“ + password + enter. Hopefully you were successful.
Check the basic functionality of your installation by displaying all databases that are currently installed on the db. Command, which is needed in the terminal: „SHOW DATABASES;“