I know what you mean, but one of the features of Acrobat 6.0 Pro is that it can "convert paper documents to compact, searchable digital files", and I got some information from other sources that said with Acrobat, the paper-based document can be scanned and converted to a tagged file which can be searched by screen readers, does that mean its content can be searched in the database? I just don't know how to do it.