A web advertising system was created using CGI programs written in the Perl programming language.
The banners displayed are related to the keywords used in the search queries visitors used on the website. The number of visitor views, clicks and the click through ratio can be viewed in a table on a HTML page also generated by a CGI program written in Perl.
Part of another project consisted of several Perl CGI programs for showing various web advertising related statistics using tables on HTML pages. The data was extracted from a MySQL database using DBI.