Page History

Element Description

The archive and distribution information main element allows data providers to provide users information of what is available for downloading when they are initially looking at a collection. The end users get information such as the average downloadable file size, format, mime type, checksum, an estimate of the collection's entire downloadable file size, etc.

Best Practices

There are multiple sub-elements that comprise Archive and Distribution Information for Collections:

Format: Defines a single format for an archival artifact (e.g., binary, jpeg, HDF5, HDF-EOS5, geotiff)

Format Type: Allows the provider to define if the archival artifact's format is in its native format or another supported format

Average File Size: An approximate average of the size of the the archivable item, which gives users an idea of the magnitude of each archivable file

Average File Size Unit: Unit of measure for the average file size (e.g., KB, MB, TB)

Total Collection File Size: An approximate total size of the archivable items, which gives users an idea of the magnitude of all the archivable files combined

Total Collection File Size Unit: Unit of measure for the total collection file size (e.g., KB, MB, TB)

Total Collection File Size Begin Date: The date that data collection began for the collection, which should be in the following format: yyyy-MM-ddTHH:mm:ssZ

Description: Enables the provider to provide more information about the archivable item 

Media: Defines how the distributable material can be obtained by an end user (e.g., CD-ROM, hard drives, online, etc.)

Fees: Provide the price an end user will need to pay in order to obtain the distributable material

Examples:

Format Type: "Native"

Average File Size: "250"

Average File Size Unit: "KB"

Total Collection File Size: "25"

Total Collect File Size Unit: "GB"

Total Collection File Size Begin Date: "2018-04-01T00:00:00Z"

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

UMM Migration

None

Future Mappings

      <gmi:MI_Metadata>
  ...
         <gmd:specification>
             <gco:CharacterString>TotalCollectionFileSizeBeginDate</gco:CharacterString>
           </gmd:code>
             <gmd:codeSpace>
                <gco:CharacterString>2018-04-01T00:00:00Z</gco:CharacterString>
              </gmd:codeSpace>
            <gmd:specification>
      <gmi:MI_Metadata>
            

ArchiveandDistributionInformation: [ 
  { 
    AverageFileSize: "250", 
  },
  { 
    AverageFileSizeUnit: "KB", 
  },
  { 
    TotalCollectionFileSizeBeginDate: "2018-04-01T00:00:00Z", 
  } 
],

History

UMM Versioning

ARC Documentation