Newbie question

[prev] [thread] [next] [Date index for 2004/08/11]

I have a question about this part of the synopsis:

  Music::CD->columns(All => qw/cdid artist title year/);
  Music::CD->has_a(reldate => 'Time::Piece',
         inflate => sub { Time::Piece->strptime(shift, "%Y-%m-%d") },
         deflate => 'ymd',
  );

If reldate is not a column, where is it stored?

Thanks,
- Mark.