How to Restore Database Backup in SQL Server 2012?

To restore a database backup in SQL Server 2012, follow these steps:

1. Open SQL Server Management Studio and connect to the SQL Server instance where you want to restore the database backup.
2. In Object Explorer, right-click on the Databases node and select “Restore Database”.
3. In the “Restore Database” window, select the “Device” option under the “Source” section and click on the “…” button to select the backup file to be restored.
4. In the “Select Backup Devices” window, click on the “Add” button and browse to the location of the backup file. Select the backup file and click on “OK”.
5. Back in the “Restore Database” window, the backup file should now be displayed in the “Source” field. Under the “Destination” section, enter the name of the database that you want to restore the backup to.
6. In the “Options” section, select any additional restore options that you require, such as “Overwrite the existing database” or “Preserve the replication settings”.
7. Click on the “OK” button to start the restore process. A progress bar will show the status of the restore operation. Once the restore operation is complete, you should see a “Restore successfully completed” message.

Your database backup should now be restored and accessible in SQL Server 2012. Note that you may need to update any logins or user mappings for the restored database to match the original database. You may also need to update any connection strings or application configurations that point to the database.