All the settings will be restored, group structures, policies, install packages, contect definitions - all of this is being stored directly in the database and accessed by SEPM. So when you do a backup of DB you are basically backing up all of these and the with later restore the state of the SEPM will be exactlyu the same.
In 12.1 just remeber you need the receovry file to fully restore the previous sepm fucntionality while doing the disaster recovery:
http://www.symantec.com/docs/TECH160736