Hi Franklin,
My questions are these:
1. Is there a program to fix a corrupted database? How do I get it?
You should google for your problem as it is related to MySQL it seems.
2. If I redo everything how do I redo the database from the backup- or is it even worth it considering if it is corrupted?
You should look for help online related to the MySQL command line for mysqld and backups/restores...
So far this is not related to New World Studio which is nothing more than a graphical user interface starting or stopping OpenSim. If you have a lot of objets/scripts in your simulator, I would think about upgrading your hardware or hosting on a server.
Olivier