Re: ISBN/ISSN/ISMN/EAN13 module

Jeremy Kronuz wrote:

>  
> > Michael wrote:
> > I do hope that your algorithm for generating 13 digits from 10 has been 
> > validated with isbn.org, since all the check digits will change.  I 
> > believe it is crucial for postgresql to generate isbn codes in both 10 
> > and 13 digits
>
> Indeed now that see the module it's finally close to be accepted as an 
> official module, I'm verifying my algorithm against the one in the 
> ISBN User Manual and all the current information I can get my hands 
> into (I first created the module a couple years ago, and there wasn't 
> as much information back then.)
>  
> The module internally keeps all the numbers in EAN13 mode, and it only 
> converts the numbers to ISBN when required or needed by the selected 
> data type.
>  
> > and in the two separate ways required of publishers on 
> > their bar codes, with just the 10 digit input.  This is just a special 
> > case for the overall classification system, so the initial 3 digit code 
> > for book publishers should not be hard wired. 
>  
> I got lost in what you said here, could you please be more specific? 
> what is that about the initial 3 digit code you're mentioning?
> do you mean "the two separate ways", you mean both ISBN and ISBN13 as in:
>
>   ISBN-13: 978-1-873671-00-9
>
>   ISBN-10: 1-873671-00-8
>
> ?
>  
> Shortly, I'll be further improving the performance and doing some 
> tweaking in other areas, as well as updating the ISBN hyphenation 
> ranges and probably adding UPC support.
> I'm still not sure if to include hyphenations in the EAN13 codes as it 
> seems it's not part of the standard, thus 0036000291452 and 
> 9781873671009 would be to examples of how the EAN13 numbers would show 
> without hyphenation....
>  
> Thanks for your concerns,
> Kronuz.
>
> "Fools rush in where fools have been before" - Unknown
>
>
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the 978 is the worldwide classification for book publishers.  There is a 
complete schedule of 3 digit prefixes for all other types of products in 
the world, and it syncs withbthe NAIAC


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