Date types

Data objects can have a variety of dates associated with them, and they all need to be categorised so that filtering and searching can work correctly. The available date types are listed below. With one exception, types 11 through 19 are all taken from DataCite, and the names and descriptions are identical to those in DataCite. The exception is type 51, which was added by ECRIN.

Types 52 through to 65 were all added to accommodate the different date types found in PubMed data.

id	name	description	source
11	Accepted	The date that the publisher accepted the resource into their system. To indicate the start of an embargo period, use Submitted or Accepted, as appropriate.	DataCite
12	Available	The date the resource is made publicly available. May be a range. To indicate the end of an embargo period, use Available.	DataCite
51	Controlled access in force	The date the resource is made available under controlled access of some form. May be a range. To indicate the end of such a period, use Available.	ECRIN
13	Copyrighted	The specific, documented date at which the resource receives a copyrighted status, if applicable.	DataCite
14	Collected	The date or date range in which the resource content was collected. To indicate precise or particular timeframes in which research was conducted.	DataCite
15	Created	The date the resource itself was put together; this could be a date range or a single date for a final component, e.g., the finalised file with all of the data. Recommended for discovery.	DataCite
16	Issued	The date that the resource is published or distributed e.g. to a data centre.	DataCite
17	Submitted	The date the creator submits the resource to the publisher. This could be different from Accepted if the publisher then applies a selection process. Recommended for discovery.	DataCite
18	Updated	The date of the last update to the resource, when the resource is being added to. May be a range.	DataCite
19	Valid	The date or date range during which the dataset or resource is accurate.	DataCite
52	PubMed citation created	The date in the Pubmed XML, in the element 'DateCreated'.	PubMed
53	PubMed citation revised	The date in the Pubmed XML, in the element 'DateRevised'.	PubMed
54	PubMed citation completed	The date in the Pubmed XML, in the element 'DateCompleted'.	PubMed
55	Epublish	Date of electronic publication.	PubMed
56	Ppublish	Date of print publication.	PubMed
57	Revised	Date an article was revised in publication by the authors.	PubMed
58	Ahead of print publication	Date an article was published electronically, ahead of print publication (PubMed date category).	PubMed
59	Retracted	Date the publisher retracted an article or a resource.	PubMed
60	Added to eCollection	Date an article was included in an electronic collection (similar to an issue).	PubMed
61	Added to PMC	Date article was added to PMC.	PubMed
62	Added to Pubmed	Date the citation was added to PubMed, unless the citation is added to PubMed more than twelve months since the date of publication. In that case, the PubMed date is set to the date of publication.	PubMed
63	Added to Medline	Date the citation completed Medline processing. Up until the citation has been indexed for Medline, the Medline date is the same as the Entrez date.	PubMed
64	PMC embargo release	Date a full-text article was released from embargo in PubMed Central (PMC).	PubMed
65	Added to Entrez	Date when PubMed entry entered into the e-utils Entrez system.	PubMed
90	Other	Date type not defined elsewhere.	ECRIN
0	Not yet known	Dummy value supplied by default on entity creation.	ECRIN