[tdwg-content] delimiter characters for concatenated IDs

[Robert Guralnick]

  We've been examining the use (ad mis-use) of the DwC triplet, and how
that propagates out of local portals and platforms into other ones.   The
end message from this work (and I am happy to share the manuscript and all
the datasets we have compiled and examined) is that it is a _terrible_
choice for a global unique identifier.

   There are so many better choices, that don't rely on delimiters or on
what is ultimately a non-globally unique, non persistent,  non resolvable
choice for a (permanent, resolvable, globally unique) identifier.  As
opposed to having this conversation, I wonder why we aren't having one
about ALL the other more rational choices...

Best, Rob



On Mon, May 5, 2014 at 8:14 AM, Chuck Miller <Chuck.Miller at mobot.org> wrote:

> Markus,
>
> Didn’t we reach a general consensus within the last couple of years that
> the vertical pipe (|) was the preferred concatenation symbol?
>
>
>
> Chuck
>
>
>
> *From:* tdwg-content-bounces at lists.tdwg.org [mailto:
> tdwg-content-bounces at lists.tdwg.org] *On Behalf Of *Markus Döring
> *Sent:* Monday, May 05, 2014 8:49 AM
> *To:* "Dröge, Gabriele"
> *Cc:* tdwg-content at lists.tdwg.org
> *Subject:* Re: [tdwg-content] delimiter characters for concatenated IDs
>
>
>
> Hi Gabi,
>
> can you explain a little more what you are trying to do giving an example
> maybe?
>
>
>
> It appears to me you are creating (globally) unique identifiers on the
> basis of various existing fields which is fine. But when you use the
> identifier to create resource relations they should be considered opaque
> and you should not need to parse out the underlying pieces again. So in
> that scenario the character used to concatenate the triplet does not really
> matter for the end user as long as its unique and points to some existing
> resource, indicated by the occurrenceID in case of occurrences or the
> materialSampleID for samples.
>
>
>
> Best,
>
> Markus
>
>
>
>
>
>
>
> On 05 May 2014, at 15:24, Dröge, Gabriele <g.droege at BGBM.ORG> wrote:
>
>
>
> Hi everyone,
>
>
>
> I guess there might have been some discussions about proper delimiter
> characters in the past that I have missed.
>
>
>
> In several projects, first of all in GGBN (Global Genome Biodiversity
> Network, http://www.ggbn.org), there is a need for making a decision now.
> We need to reference between different records and databases and within
> Darwin Core we want to use the relatedResourceID to do so.
>
>
>
> During our GGBN workshop at TDWG last year we agreed on concatenating the
> traditional triple ID (Catalogue Number, Collection Code, Institution Code)
> and add further parameters if required too (e.g. GUID, access point). We
> have checked those parameters and can definitely not use a single character
> as delimiter.
>
>
>
> So my question to you is, if there are already some suggestions on using
> two characters together as delimiters. It would be great if we could find a
> solution more than one community could agree on.
>
>
>
> Otherwise I would like to open the discussion and suggest "\\", "||",
> "\|", "§|", "§§", or "\§".
>
>
>
> Best wishes,
>
> Gabi
>
> -----------------------------------------------------------------
>
> Gabriele Droege
>
> Coordinator - DNA Bank Network
>
> Global Genome Biodiversity Network (GGBN)
>
> Berlin-Dahlem DNA Bank
>
> Women's Officer ZE BGBM
>
>
>
> Botanic Garden and Botanical Museum Berlin-Dahlem
>
> Freie Universität Berlin
>
> Koenigin-Luise-Str. 6-8
>
> 14195 Berlin
>
> Germany
>
>
>
> +49 30 838 50 139
>
>
>
> www.dnabank-network.org
>
> www.ggbn.org
>
> www.bgbm.org
>
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