title: What defines a Business Object
body: <p>From the title, I believe it to be a straight forward question, but looking into the "world of Business Objects" I can't seem to put my finger on anything solid as to what a Business Object should be.  Are there any best practices that I should follow, or even any design patterns?</p>
  
  <p>I have found a book, "Expert C# Business Objects", would this be my best starting point to get a better understanding?</p>