1. (창 여러개 허용설정) 상단메뉴 Edit -> Preferences -> Others > Allow more than one instance of MySQL Workbench to run [체크] -> [OK]클릭
2. 1번을 진행하고 MySQL Workbench를 또켜면 MySQL이 새창으로 열린다
3. 참고 : https://stackoverflow.com/questions/21235894/how-to-open-multiple-model-database-in-mysql-workbench