If the database already exists and you only need to restore its contents:
If you do not have the backup file on the server, you can upload the backup file to the server storage from your local machine. For more information, refer to the section Uploading and Downloading Database Backup Files.
If you are restoring an MS SQL database, there is a possibility that some database users will be orphaned. In order to provide the ability to access and use the database for these users, you need to repair them. For more information, refer to the section Post-Restoration Database Repair.