title: Any good sample for an updatable WCF Data Service implementation
body: <p>I am looking for a good sample implementing an updatable WCF Data Service. I found <a href="http://msdn.microsoft.com/en-us/library/ee373841.aspx" rel="nofollow">this article on MSDN</a> that shows a sample implementation using IUpdatable, but not sure if I understand this post. There are methods used in this post such as GetTable() and SubmitChanges(), whose implementation is not provided.</p>
  
  <p>Appreciate any pointers.</p>