title: core data in storage array attribute or work with files or relationship entities
body: <p>I'm trying to work for a long time with the core data.<br>
  And I read a lot of tutorials about this and i asked a lot of questions.</p>
  
  <p>Finally I started to work on core data<br>
  Through this guide:   <strong>www.appcoda.com/introduction-to-core-data/</strong></p>
  
  <p>And now I'm stuck!<br>
  I want to create the kind of attribute, array.<br>
  And was told me it's a not a good way to store array about attribute.<br>
  These work with a relationship.  </p>
  
  <p>But the problem here.<br>
  If you look at the guide, it does not create files (classes) entities<br>
  And all the other guides. Yes creating files, so they do not help me so   much because I do not have my entity files.  </p>
  
  <p>Is there a way to create the kind of relationship that behaves like array to one attribute, without me having to make file creating entities?<br>
  Because of my project is already very big.</p>