To restore a database in Odoo, click on the Restore option in the Database Management menu.

To restore your database, you need to provide three pieces of information: the backup file you wish to restore, the master password of Odoo, and a new database name. Clicking on the Browse... button in the file selection area will prompt you to select the .dump file created when you performed the backup.

After you have specified the file and the other required fields, click on Restore Database to begin restoring the database. A small progress bar in the bottom left of the browser will update you on the progress of the restore. Once the restore is complete, log in to the database to make sure everything is working as expected.

Now with a successful backup and restoration, you are ready to begin customizing Odoo. If something goes wrong, you will now have the ability to restore your backup. While customizing Odoo, remember to back up the database frequently.