This tutorial shows you how you can attach the WordPress media library to specific database columns.
I cannot import ZIP files
You must have ZipArchive installed to import ZIP files. If you do not have ZipArchive installed you can still import the demo application. In that case you need to import the SQL files which are part of the ZIP files. The SQL files you need to import the demo app are located in sub folder setup of folder wpda_sas. This folder contains two SQL script files: wpda_bas_database.sql and wpda_bas_project.sql. You need to import both files. The order in which you import them does not matter.