title: How to check whether Perl DBI module present in my system?
body: <p>I'm using Perl in XAMPP for server-side scripting.<br>
  I want to access Database from Perl.
  I'm using <code>use DBI;</code>.<br>
  How to check whether Perl DBI is present in my system?
  I'm getting Server-Error. <code>Error 500</code>.<br>
  I'm using Tomcat server.</p>