how to upgrade SQL DM from 10.2.2. to 10.6

Hello,

Please advise on how to upgrade SQL DM from 10.2.2. version to 10.6 ?

I have downloaded the latest installation file.   When I run it, will it automatically upgrade what I have?

Do I need to make a backup of the SQLDMRepository Database prior to upgrade?

Thanks,

Veena S