How to restore SQL Server after it has been detached

To restore a detached SQL Server database, you can follow these steps:

1. Connect to a database server that has SQL Server installed.
2. In SQL Server Management Studio, right-click on the “Databases” folder, and then select “Restore Database”.
3. Select the “Source Device” tab in the “Restore Database” dialog box.
4. Select the “Disk” option from the dropdown menu under “From Backup Media”.
5. Click on the “Add” button to browse and select the database backup file you want to restore.
6. Select the database you want to restore in the “Restore Database” dialog box at the top left corner.
7. Choose the appropriate options on the “Settings” page, such as overwriting the existing database, recovery mode, and others.
8. Click on the “OK” button to start the restoration process.

Please note that the process of restoring the database may take some time, depending on the size of the database and the system’s performance. Once completed, you will be able to access and use the restored database.