no, in algeria the first language is arabic, but all what is related
to technology is learned in french (the are exception where they learn
in english, but it is in one or two universities..).
about the application, it is doing a real simple stuff:
a client has no product information, so when he buys something (add to
cart since there is no epaymement here, only add the information to
its account), then the new product will be added, and it's not the
reference to this product that will be written to its data, but the
whole product information, so it will be a "denormalization"?
same thing happens with product uploaded (sold), so there is no
foreign keys, except for GridFS pictures, a document have the max of
16 MB so i must use GridFS to hold pictures and store only their _id
(i think this is the only 'join' that exists)
On 27 sep, 11:10, Sam Millman <
sam.mill...@gmail.com> wrote:
> It all depends on what you class as a ERM. To me and ERM is just another
> view of ERD:
>
>
http://www.databasedesign.co.uk/bookdatabasesafirstcourse/chap3/chap3...
>
> en.wikipedia.org/wiki/Entity–relationship_model<
http://en.wikipedia.org/wiki/Entity%E2%80%93relationship_model>
>
> So I am not sure how you mean by JSON document, this was probably my
> confusion in your first post.
>
> So what are you trying to draw? If you give a full example it might help
> because you don't normally define the fields of a table/collection until
> the normalisation step which occurs after the UML diagrams.
>
> Though it is strange that you learn in French, I would have expected Arabic
> if anything :)
>