title: What is the reference for ´System.Data.Entity.Infrastructure´?
body: <p>Using <a href="http://visualstudiogallery.msdn.microsoft.com/72a60b14-1581-4b9b-89f2-846072eff19d" rel="noreferrer">Entity Framework Power Tools Beta 2 extension</a>, it generates model classes with the following imports:</p>
  
  <pre><code>using System.Data.Entity.Infrastructure;
  </code></pre>
  
  <p><strong>What reference do I need to include into my project using Visual Studio 2010?</strong></p>
  
  <p>Currently, I have the following <em>References</em>:</p>
  
  <ul>
  <li>log4net</li>
  <li>System.configuration</li>
  <li>System.Core</li>
  <li>System.Data</li>
  <li>System.Data.Entity</li>
  <li>System.Web</li>
  <li>System.Web.Mvc</li>
  <li>System.XML</li>
  </ul>
  
  <p>And in the <em>Add Reference</em> dialog I have the following:</p>
  
  <p><img src="https://i.stack.imgur.com/P9NzJ.png" alt="Add Reference Dialog"></p>