1. At fast login to the plesk control panel and go to the website & domain tab and click on Database button.
2.Then click Export Dump button.
3.Now chose the folder where you want save the database backup and click OK button.
4.A download popup will appear, now you can download the database backup.
5. To restore database click on Import Dump button.
6.You can chose database backup file your from your local system or from server repository. after that click on OK button and database will now restore automatically.