title: what is common GIS method?
body: <p>I want to know what is the main methods that used in GIS to connect between the location and their information (spatial access methodes) SAM.</p>
  
  <p>I read in some web sites two methods are:</p>
  
  <p>vector
  raster</p>
  
  <p>is that methods related  what I want???</p>
  
  <p>thank you ^_^</p>