Terminal 1:
ec2-user:~/environment $ cd SOFTWAREENGINEERINGTEAM15/
ec2-user:~/environment/SOFTWAREENGINEERINGTEAM15 (main) $ node app.js

Terminal 2:
ec2-user:~/environment $ sudo systemctl start mariadb
ec2-user:~/environment $ sudo mysql -u root -p
Enter password: flashship@123

after entering mysql terminal
use flashship;