title: How to check serializability
body: <p>I am practicing for my end-semester exams and this piece of question is bugging me a lot. We have two database transactions T1 and T2 accessing an object X.</p>
  
  <pre><code>T1:W(X), T2:R(X), T1:W(X), T2:Abort, T1:Commit
  </code></pre>
  
  <p>The answer given in the solution manual is that this schedule is not serializable. But is think it is equivalent to the serial schedule
      T2: R(X) , T2:Abort, T1: W(X) , T1: W(X) , T(1): Commit.</p>
  
  <p>Correct me if I am wrong. </p>
  
  <p>Source:  Database Management Systems, Ramakrishna &amp; Gehrke 3e. </p>