What is damage from from accidently touching positive to negative with a tool

What is your question?

I am a novice. I was changing the positive battery terminal and lost focus because the new one was hard to get on and touched the two terminals together with a metal tool which made a spark. I now can hear the starter whine a little when I start the car. Could this have happened and what else may have been damaged? Thanks, I always disconnect in the future since I never know when I might lose focus.