Over the last several months there has been significant chatter around what is background database maintenance and why is it important for Exchange 2010 databases. Hopefully this article will answer these questions.

What maintenance tasks need to be performed against the database?

The following tasks need to be routinely performed against Exchange databases:

--> Please see the rest on the blog : http://blogs.technet.com/b/exchange/archive/2011/12/14/database-maintenance-in-exchange-2010.aspx