+-----------------+
    |  HTML TEMPLATE  |  presentation layer
    |                 |
    +-----------------+
             |
             | HTML::Template
      +-------------+
      | PERL SCRIPT |---------> build the final HTML page
      +-------------+  CGI
             | DBI, DBD
             |
    +-----------------+
    | MEMBER's INFO   |  logical data layer
    +-----------------+
    | DATABASE        |
    +-----------------+