How can Oracle restore data from backup tables?

The Oracle database can restore data by using backup tables. Here are some specific steps:

1. Create a temporary table with the same structure as the backup table.
2. Create a temporary table named temp_table and copy all the columns from the backup_table where the condition 1 equals 0.
3. Insert the data from the backup table into the temporary table.
4. Copy all data from the backup table and insert it into a temporary table.
5. Backup or delete the original table.
6. Make a backup copy of the original table by creating a new table called backup_table_backup and copying all the data from the original table to it. If needed, delete the original table.
7. Rename the temporary table to the name of the original table.
8. Change the name of the temporary table to be the same as the original table.

By following the steps above, you will be able to restore data from the backup table to the original table. Please make sure that the data in the backup table is what you want to restore and that both tables have the same structure before carrying out this process.