Page History

Element Description

Note: This wiki page is a draft/ work in progress

Data Dates is comprised of dates for The Data Dates element is used to identify dates when the data or resource itself changed in some way. This element is made of two sub-elements, type Type and dateDate. The type Type describes what the date represents: a future review, when the resource was created, last updated, or planned for deletion. The date Date describes when the resource had an or will have the action performed on it or when the action will occur as described by the type Type element.

Best Practices

The Creation, Last Revision, Future Review, and Planned Deletion dates exist in various places in the different standards.

All data dates have been consolidated under this element. They will be typed and will all be represented by the ISO 8601 date and time conventions as part of the reconciliation process. In DIF 10 both the metadata and data dates are located under the DIF/Metadata_Dates element. The difference is that the sub-elements of Metadata_Creation, Metadata_Last_Revision, Metadata_Future_Review, and Metadata_Delete describe the metadata dates and the sub-elements of Data_Creation, Data_Last_Revision, Data_Future_Review, Data_Delete describe the resource dates.

Examples:

Type=CREATE: 2010-02-01

Type=UPDATE: 2018-02-01

Type=REVIEW: 2019-02-01

Each Data Date is accompanied by a Type. The Type must be selected from a controlled vocabulary list. There are four options available for Type:

1. CREATE: The date the resource was created. This should be the date the dataset was published in the database/ entered into the data archive system. 
2. UPDATE: The date the resource was last updated. This includes any changes made to the data itself, such as a change in processing or a change in the file naming convention.  
3. REVIEW: The date of a planned future review of the resource. 
4. DELETE: The date the resource will be deleted. 

Providing a Data Date is optional. Multiple Data Dates are allowed, however, the same date type should not be repeated more than once in the same record (for example, a CREATE and an UPDATE time can be provided, but two CREATE times cannot be provided in the same record). All dates should comply with the ISO 8601 Standard. 

Examples:

Type = CREATE   Date: 2010-02-01

Type = UPDATE   Date: 2018-02-01

Type = REVIEW   Date: 2019-02-01

Metadata Validation and QA/QC

All metadata entering the CMR goes through the below process to ensure metadata quality requirements are met. All records undergo CMR validation before entering the system. The process of QA/QC is slightly different for NASA and non-NASA data providers. Non-NASA providers include interagency and international data providers and are referred to as the International Directory Network (IDN).

Please see the expandable sections below for flowchart details.

Dialect Mappings

Example Mapping

<InsertTime>2012-12-12T00:00:00.000Z</InsertTime>
<LastUpdate>2018-10-03T00:00:00.000Z</LastUpdate>

DataDates: [
    {
 <gmi:MI_Metadata>
  <gmd:identificationInfo>
    <gmd:MD_DataIdentification>
      <gmd:purpose> Date: "2012-12-12T00:00:00.000Z",
        <gcoType:CharacterString>To provide"CREATE"
 VIIRS 375m resolution active fire locations in Near Real-Time in easy to use formats.</gco:CharacterString>},
    {
        Date: "2018-10-03T00:00:00.000Z",
      </gmd:purpose>  Type: "UPDATE"
    </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
</gmi:MI_Metadata>

INSERT EXAMPLE

}
]

<gmd:date>
<gmd:CI_Date>
   <gmd:date>
     <gco:DateTime>2008-06-03T00:00:00.000Z</gco:DateTime>
   </gmd:date>
   <gmd:dateType>
     <gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
   </gmd:dateType>
</gmd:CI_Date>
</gmd:date>
<gmd:date>
<gmd:CI_Date>
   <gmd:date>
     <gco:DateTime>2005-06-01T00:00:00.000Z</gco:DateTime>
   </gmd:date>
   <gmd:dateType>
     <gmd:CI_DateTypeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="creation">creation</gmd:CI_DateTypeCode>
   </gmd:dateType>
</gmd:CI_Date>
</gmd:date>

INSERT EXAMPLE

UMM Migration

<gmd:DS_Series>
<gmd:seriesMetadata>
<gmi:MI_Metadata>
  ...
  <gmd:identificationInfo>
    <gmd:MD_DataIdentification>
      ...
      <gmd:citation>
        <gmd:CI_Citation>
          ...
          <gmd:date>
            <gmd:CI_Date>
              <gmd:date>
                <gco:DateTime>2012-12-12T00:00:00.000Z</gco:DateTime>
              </gmd:date>
              <gmd:dateType>
                <gmd:CI_DateTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="creation">creation</gmd:CI_DateTypeCode>
              </gmd:dateType>
              <gmd:date>
                <gco:DateTime>2018-10-03T00:00:00.000Z</gco:DateTime>
              </gmd:date>
              <gmd:dateType>
                <gmd:CI_DateTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
              </gmd:dateType>
            </gmd:CI_Date>
          </gmd:date>
          ...
        </gmd:CI_Citation>
      </gmd:citation>
      ...
    </gmd:MD_DataIdentification>
  </gmd:identificationInfo>
  ...
</gmi:MI_Metadata>
</gmd:seriesMetadata>
</gmd:DS_Series>

DataDates: [
    {
        Date: "2012-12-12T00:00:00.000Z",
        Type: "CREATE"
    },
    {
        Date: "2018-10-03T00:00:00.000Z",
        Type: "UPDATE"
    }
]

UMM Migration

None

Future Mappings

<mdb:MD_Metadata>
  ...
  <mdb:identificationInfo>
    <mri:MD_DataIdentification>
      <mri:

citation>
        

INSERT EXAMPLE

<cit:CI_Citation>
          ...
          <cit:date>
            <cit:CI_Date>
              <cit:date>
                <gco:DateTime>2012-12-12T00:00:00.000Z</gco:DateTime>
              </cit:date>
              <cit:dateType>
                <cit:CI_DateTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="creation">creation</gmd:CI_DateTypeCode>
              </cit:dateType>
              <cit:date>
                <gco:DateTime>2018-10-03T00:00:00.000Z</gco:DateTime>
              </cit:date>
              <cit:dateType>
                <cit:CI_DateTypeCode codeList="https://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
              </cit:dateType>
            </cit:CI_Date>
          </cit:date>
          ...
        </cit:CI_Citation>
      </mri:citation>
      ...
    </mri:MD_DataIdentification>
  </mdb:identificationInfo>
  ...
</mdb:MD_Metadata>

DataDates: [
    {
        Date: "2012-12-12T00:00:00.000Z",
        Type: "CREATE"
    },
    {
        Date: "2018-10-03T00:00:00.000Z",
        Type: "UPDATE"
    }
]

History

UMM Versioning

History

UMM Versioning

ARC Documentation