Currently GeoNetwork stores Thumbnails (at least in my latest version)
on the computer and not where the XML metadata is stored. my question: is
there a way to store Thumbnails (pictures) in a database (same for the XML
"Potentially" can be implemented a new class DatabaseStore that implements the interface Store and manages about the persistence and retrieval of the files attached to the metadata (not only thumbnails) in the database. I quote "potentially" as time ago I checked the code to implement a similar change, but was not that simple as other code outside of FileSystemStore relies also in file system for metadata files.