[mb-style] Disc catalogue numbers

[Frederic Da Vitoria]

2007/4/5, Age Bosma <agebosma at home.nl>:
> Hi,
>
> Often multiple disc releases have different catalogue numbers for each
> disc and a general one for the complete release. An example would be
> 'Queen - Live at Wembley Stadium' [1][2] with:
>
> - Release Cat#: 5 91095 2
> - Disc 1 Cat#: 5 91095 2 6
> - Disc 2 Cat#: 5 91095 2 5
>
> Obviously there's just one EAN barcode.
>
> Which one should we put in the Catalogue# field for a release event?
>
> There are different ways to look at it and I haven't made up my mind yet
> what I prefer:
>
> - We are storing the same barcode for both discs so the cat# can differ
> and we still have a method to combine both discs.
> - The release cat# should be stored since it's one release and that's
> who it's in the label's catalogue.
> - MB doesn't have a way to group discs yet so the disc cat# should be
> stored because the release cat# only applies to the group
>
> IMHO we should work this out as a guideline to add to the wiki before
> everyone starts doing it in a different way.
>
> What's your idea about this?
>
> Yours,
>
> Age Bosma
>
>
> [1] http://musicbrainz.org/show/release/?releaseid=578208
> [2] http://musicbrainz.org/show/release/?releaseid=578216

I'd rely on the Barcode for later grouping of discs but I'd store the
disc catalogue #. The album catalogue number could be put in an
annotation. I'd do it this way because the day we will create an
object to grop discs, we won't have to change anything to the data
stored in the discs release events. All we will have to do is group
discs by barcode and check in the annotations to get the album
catalogue number.

-- 
Frederic Da Vitoria