title: Faking a dynamic schema in Core Data?
body: <p>From reading the Apple Docs on Core Data, I've learned that you should not use Core Data when you need a dynamic schema.  If I wanted to provide the user the ability to create their own properties, in a core data model would it work if I created some "dummy" attributes like "custom decimal 1", "custom decimal 2", "custom text 1", "custom text 2" etc that the user could name and use for their own purposes?  </p>
  
  <p>Obviously this won't work for relationships, but for simple properties it seems like a reasonable workaround.  Will creating a bunch of dummy attributes on my entities that go unused by most users noticeably decrease performance for them?  Have any of you tried something like this?  Thanks!</p>