Re: [Objectbridge-developers] Sample Many-to-Many Mapping XML

[Christian S. <chr...@ne...>]

Hi Thomas and all,

as this touches one of my pet subjects ;-), I have to raise my voice here:

>Right now this is exactly the thing you have to do! You need three tables
to
>decompose m-n into two 1-n relationships. Thus you also need three classes.
>This approach is also suggested by the gurus: see
>ftp://members.aol.com/kgb1001001/Chasms/chasms.pdf.

Now what exactly makes someone a "guru"? Writing an article like that one? I
think figuring out that you have to introduce an intermediary entity for an
N-M relationship (unless your O/R tool handles them transparently) does not
require deep understanding - its simply the only way to get there, as it
directly reflects the table structure.

just my 2c, as always
Christian