Logfiles type access.log.12.3 - MySQL DB and PIWIK

Maybe stupid question : On my website there are logiles (textfiles, these files have all a filename in format “access.log.12.3” - Is it possible to analyze them directly with PIWIK or do I have to import them in a MySQL database and can analyze them there ? Where can I find more information how to get them in the MySQL databatase if this is necessary. THANKS. Franz

Log Analytics with Piwik