And hopefully you'll also be demonstrating an easy import facility for importing catalog data from other well-known catalog formats...
No, we won't. We aren't going to reverse engineer anyone's database formats. Hopefully your images have the metadata in standard formats (IPTC/XMP) in them instead of the metadata existing only in the database.
Just because a catalog application is well-known doesn't mean that their database format specification is publicly available.
All it should take is pointing PM's Scanner at your files and letting it do its job finding your images and videos and cataloging them.
-Kirk