How do I create an rdb file that plays nicely with RetroArch?

I creating playlists and some of the databases are not what I desire or incomplete. I’d like to recreate the rdb and build a dat matching to a full set of cover art if possible. If not, then I’ll batch process the ipl and do it that way. Anyone been through this and have some advice?

The rdbs are binary files that have been run through our processor, so you can’t edit them after the fact but you can edit the original databases. If it’s just a playlist issue, though, you’re probably better off editing the lpl instead, since it’s just a plaintext file.