title: Create user profiles/accounts using core data
body: <p>I'm creating an app that has the feature of adding two profiles/accounts. Each profile will have data assosiated with it that i'm currently managing with core data. 
  My CD model simply has two entities, "Baby" which has a 'birthday' and 'name', "Photo" which just has Binary data to store the photo.
  The data will consist of about 100 to 200 photos with associated text and date values. </p>
  
  <p>I have two questions about how I should go about this:</p>
  
  <ol>
  <li><p>With the amount of data i'm potentially going to have, is core data the way ahead. If its not then whats my best option. </p></li>
  <li><p>Could you give me a little hint as to how I should go about creating and managing the user profiles/accounts. Like whats the best way to find out if a profile exists and then show it rather than showing a plus button?</p></li>
  </ol>
  
  <p>Any help would be great, even if its just to get me off in the right direction.</p>
  
  <p>Cheers </p>