The Database Manager allows you to work with several databases simultaneously. Besides, it allows you to back up and recover databases in order to prevent data loss in case of a failure. You can use the File => Database Manager menu item to open it.
The central part of its window contains the list of available databases with the size they occupy on the disk. To switch to a certain database, you should select it in the list and click the خت button. You will be able to work with it in the program then.
The commands for managing databases are available on the toolbar.
The New button allows you to create a new database with the specified name.
The Add and Delete buttons allow you to add a new database file to the list and remove an existing one from it.
The Backup and Recover commands allow you to back up the specified database or recover it from its backup on the disk.
The Compress command reduces the size of a database if possible.