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DINA-Web / dina-use-cases

Use cases for the development of various DINA modules
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Example of two-level identifiers #20

Closed mikkohei13 closed 6 years ago

mikkohei13 commented 6 years ago

Could someone give an example of two-level identifiers on the case https://github.com/DINA-Web/dina-use-cases/blob/master/collection/12-Add_a_second_level_catalog_number_to_a_specimen_draft.md What does the higher and lower-level identifiers refer to?

I don't recall ever seeing two-level identifiers.

cgendreau commented 6 years ago

I may be wrong but I think it could also be an alternative path of https://github.com/DINA-Web/dina-use-cases/blob/master/collection/13-Recognizing_an_additional_individual_for_a_specimen_draft.rst or maybe it is already covered by https://github.com/DINA-Web/dina-use-cases/blob/master/collection/06-Registering_a_specimen_that_belongs_to_a_nested_preparation.rst ?

ssbilkhu commented 6 years ago

Here is a herbarium image I found on google: https://www.kew.org/sites/default/files/herbarium%20sheet%20and%20cabinet.jpg

In the image you can see there is the pressed plant which takes up the majority of the sheet but in the top right corner there is a envelope which may contain more parts of the same specimen or a completely different specimen.

In this case the plant on the sheet maybe AAFC 1001 - A, where AAFC is the collection, 1001 is the higher level identifier and "A" is the lower level identifier. The other material in the envelope would be AAFC 1001 - B.

mikkohei13 commented 6 years ago

Ok, thanks for the example.

The collections I've seen having this kind of specimens haven't had lower-level identifiers: just either no specific identifiers for subunits, or completely unique identifiers for them. I would prefer this approach, as lower-level identifiers would not be persistent (or would carry misleading information) in the case subunit would be detached and made an independent specimen.

Closing this issue.

cgendreau commented 6 years ago

I'm still not sure what's the main difference with 06-Registering a specimen that_belongs to a nested preparation. I would probably update it to add the possibility of having second level identifier (catalog number) in Alternative paths and remove 12-Add a second level catalog number to a specimen.

cgendreau commented 6 years ago

Just for clarification, I checked with @ssbilkhu and the lower-level identifier represents the link to the physical piece (e.g. written on the envelope), it still gets a generated unique identifier assigned.