title: Parent child relation in Linq query
body: <p>In the Entity Class</p>
  
  <p>I have two parent table "TestParent" and "TestTag" in Entity class and one of the child table 
  "TestChild" which is not updated in Entity class. so can I Join the TestParent and TestChild table (both are foreinkey primary relation).</p>
  
  <p>Issue: I am not able to select child table TestChild in Linq query       </p>
  
  <p>Table : TestTag: </p>
  
  <p><a href="https://i.stack.imgur.com/FNlRa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FNlRa.png" alt="enter image description here"></a> </p>
  
  <p>Table: TestParent:</p>
  
  <p><a href="https://i.stack.imgur.com/KFXsa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KFXsa.png" alt="enter image description here"></a></p>
  
  <p>Childtable: TestChild</p>
  
  <p><a href="https://i.stack.imgur.com/4HrNf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4HrNf.png" alt="enter image description here"></a></p>
  
  <p>In Entity class below </p>
  
  <pre><code>public DbSet&lt;TestParent&gt; Questions { get; set; }
    public DbSet&lt;TestTag&gt; Tags { get; set; }
  </code></pre>