I have approximately 5,000 PDF files in 4 different categories on our Joomla website that are currently only accessible by via a PHP/mySQL seach script. The filenames (which are numbers) and file locations are stored in a mySQL db and there is a simple PHP script that sends the query and returns a hyperlink to the correct file. The seach is based on a user typing in a number which corresponds to the filename (people using this will know what the number represents - it's a legal case number).
I'd love for the files to be accessible via a google search but I'm not clear about how to make google find them. Should I just create a text page for each of the 4 categories which contain the links to each of the files and make those easily accessible by google's search?