I'm completly new to Sharepoint so I appologize if my question is stupid.
I'm having problems in understanding how Sharepoint Search Service Application works. I've learned so far that it's a self-contained search unit that when configured offers enterprise search capabilities to a farm and that one of its main areas is the Query area, which stores the search index.
Ok, so what exactly is the search index? Is it a column? A primary key? How do you perform a search using the Search Service Application? How do you choose the index?
Thank you in advance.