title: Different types of database indexes?
body: <p>I am trying to compile a list of non-system-specific database indexes. I've looked at Oracle, DB2, MySQL, Postgres and Sybase, and almost every resource has a different list. So far I have seen:</p>
  
  <pre><code>clustered, multi-dimensional clustered, unclustered, unique,
  non-unique, b-tree, hash, GiST, GIN, full-text, bitmap,
  partitioned, function-based.
  </code></pre>
  
  <p>It seems that different systems have different names for the same types of indexes.</p>
  
  <p>Are there standard index types across all systems?</p>