title: What are Indexes in the Xcode Core-Data data model inspector
body: <p>In Xcode you can add "Indexes" for an entity in the data model inspector.  </p>
  
  <p><img src="https://i.stack.imgur.com/Hls7k.png" alt="Xcode sidebar showing the Indexes view"></p>
  
  <p>For the screenshot I did hit "add" twice so "comma,separated,properties" is just the default value. </p>
  
  <p>What exactly are those indexes?<br>
  Do they have anything to do with indexed attributes? And if they have what is the difference between specifying the Indexes in this inspector and selecting "Indexed" for the individual attribute?</p>