Okay, I have a couple of questions now, that have been confusing me,

what is the difference between a Sql developer or a programmer and a DBA, ( I often here terms like Index, cluster as part of the responsibility of both a Developer and a DBA , why does 2 people handle same issues? what the difference?, If any exists)

and In this age or future of Cloud computing , is it anywise to learn DBA at this juncture from the scratch? what does future hold for SQL DBA

Finally are there any online resources, websites where I can get a feel and hang of DBA, that can teach me the ABCs of sql dba

Please guide me

Thanks in advance.