In general, I would consider this a very dangerous position. You may have dirty data in your systems and you won't know it.
Now, you may be in one of those situations where the "application is handling it all." Good luck! It almost never succeeds.
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
- Theodore Roosevelt
Author of:
SQL Server Execution Plans
SQL Server Query Performance Tuning