title: Finding out when a line has been modified in a H2 database table
body: <p>Let's imagine I have two processes A and B performing transactions on a H2 database table T.</p>
  
  <p>Process A performs CRUD (Create, Read, Update, Delete) on T.</p>
  
  <p>Process B wants to know when line L in T has been last modified (i.e., B provides a <code>System.currentTimeMillis()</code> value for example).</p>
  
  <p>One could create a column in T registering the last modification moment for each line, but I was wondering whether H2 was already holding this information somewhere and whether it can be accessed.</p>