[API-users] What happens to previous data after dataset/crawl?

Roderic Page Roderic.Page at glasgow.ac.uk
Sat Aug 27 08:01:00 CEST 2016

Just wanted to check the consequences of the following dataset operation.

Say I have a dataset with 10 occurrences with occurrence ids 1-10. In my local database I now assign those 10 occurrences new identifiers a-j. If I create a new DwCA file for my data and crawl the new archive, my expectation is:

1. Old data with ids 1-10 is deleted from GBIF index
2. New data with ids a-j is indexed

So, end result is dataset has 10 occurrences. I'm asking because I know in the past the some datasets have changed identifiers and this has resulted in records with old and new identifiers coexisting in GBIF index, resulting in duplicated data.

Obviously it would be nice to have stable, unchanging identifiers for occurrences, but the for data set I'm working with the creators have changed their minds between versions of the data :(



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