I believe that the latest version of LibreOffice an open AppleWorks/ClarisWorks files.Is there any application that can open or convert old Appleworks database files?
Even a paid service that can convert such a database to, let's say, a working LibreOffice database would be ok.
Correct. AppleWorks database is a flatfile database.Wasn't Appleworks a flat file database? If so, the spreadsheet output could be imported into a new application, such as Filemaker.
if the spreadsheet doesn't work yo could try finding an image of the old Appleworks for Windows and run it under Wine and see if it will open the database and then convert it.