in reply to Class::DBI inflection (plurality)

I believe eric256 is correct above: Class::DBI doesn't add anything, it uses exactly what's passed to the has_many method. Even in the docs, it says:

Music::Artist->has_many(cds => 'Music::CD'); # ..snip... my $artist = Music::Artist->create({ artistid => 1, name => 'U2' }); my $cd = $artist->add_to_cds({ cdid => 1, title => 'October', year => 1980, });
Notice the plural cds in both calls.

Maybe you stepped on a bug? If you could post the actual code snippets and errors, it would be easier to tell.