ISSUED for the publication of the data
UPDATED for the last update of the data
However two further dates maybe interresting to consider:
CREATED: the date at which data was created (as a dataset)
COLLECTED: the date at which the data was generated, observed...
In most cases ISSUED and CREATED are the same: date at which dataset was made publically available, however in case of data retention, this maybe different and meaningful to provide:
CREATED: date at which data was privately published
ISSUED: date at which data was publicly published
As for the COLLECTED date this is mostly of interests for the scientist.
Datacite suggests a large variety of possible dates:
https://schema.datacite.org/meta/kernel-4.4/doc/DataCite-MetadataKernel_v4.4.pdf
See Table 6.
Daiquiri currently uses two: ISSUED and UPDATED.
ISSUED for the publication of the data UPDATED for the last update of the data
However two further dates maybe interresting to consider:
CREATED: the date at which data was created (as a dataset) COLLECTED: the date at which the data was generated, observed...
In most cases ISSUED and CREATED are the same: date at which dataset was made publically available, however in case of data retention, this maybe different and meaningful to provide:
CREATED: date at which data was privately published ISSUED: date at which data was publicly published
As for the COLLECTED date this is mostly of interests for the scientist.