sql database fix, help?

i have server files from my friends mmo that's stopped along time ago
and he told me the sql database isnt working properly anymore, nothing is in the tables, i need to know is it possile to fix it or do we need to make it all over? and how long would it take at all?
thanks , i hope somebody can help me!!

Hmm, not much information to go on here. A couple of things to check.
1) Is your sql server running ( mysqld for example ).
2) Has the database name or login details changed.
3) Have you upgraded/patched the machine lately
4) Some SQL systems can do sanity checks and repairs on database.

Depening on what exactly you are using as a SQL server there might be some options there so need a bit more info.

If there is really nothing in the tables, you need to restore from a previously successful backup..