title: Determining functional dependencies from an ER diagram
body: <p>I have to determine the functional dependencies for the below ER:
  <a href="https://i.stack.imgur.com/Q7IyS.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Q7IyS.jpg" alt="enter image description here"></a></p>
  
  <p>As shown It's a one-to-many relationship. Depending on the functional dependency definition: </p>
  
  <blockquote>
    <p>"X->Y means,  each possible value of X can correspond to exactly one
    value of Y"</p>
  </blockquote>
  
  <p>, I can write:</p>
  
  <pre><code>A -&gt; B
  P -&gt; Q,R
  </code></pre>
  
  <p>But I'm not sure how should the FD should be written for Ent1 and Ent1 with the relation. If I write <code>A -&gt; X,P</code>is it correct?. Can someone explain?</p>
  
  <p>Thank you.</p>