title: Multiple edmx in one project
body: <p>I have a project with one edmx file. Test class works correctly.when i add the edmx with a different name and namespace, but connect to a similar base structure ,After the addition, before acting classes stops working and I get the message:</p>
  
  <pre><code> Mapping and metadata information could not be found for EntityType
   (InvalidOperationException)
  </code></pre>
  
  <p>Once i delete the added edmx, the project is working properly.Is there a possibility of adding two edmx files to a single project, so as not to appear to be erroneous references to the metadata?</p>
  
  <p><strong>Currently I use this connection string</strong>:</p>
  
  <pre><code>&lt;add name="MSSQLEntities" connectionString="metadata=res://*/RiskEntityModel.csdl|res://*/RiskModelLibrary.Lib.RiskEntityModel.MSSQL.ssdl|res://*/RiskEntityModel.msl;provider=System.Data.SqlClient;provider connection string=&amp;quot;Data Source=_DBSERVERNAME_;User ID=_DBUSERNAME_;Password=_DBPASSWORD_;Initial Catalog=_DBPATH_;Trusted_Connection=False;MultipleActiveResultSets=True&amp;quot;" providerName="System.Data.EntityClient" /&gt;
  </code></pre>