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Element Description
Archive and distribution information elements provide information about a format other that its original for data immediately available for download. This includes information such as the average downloadable file size, data format, mime type, checksum, and an estimate of the collection's entire downloadable file size.
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). It is strongly recommended that the format The format must be selected from the GCMD Granule Data Format vocabulary list in order to ensure adhere to the UMM-C schema. This ensures consistent use of data formats across the CMR.
Format Type: Allows the provider to define if the archival artifact's format is in its native format or another supported format
Format Description: Allows the data provider to provide added information about the provided 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
Each of these elements are available under 'FileArchiveInformation' and 'FileDistributionInformation'. FileArchiveInformation describes the data in its archived format. FileDistributionInformation describes the data as distributed by a data provider; it can be the original format in which the data are archived, or can be used to specify when the data is distributed in a format other than its original format.
Examples:
Format: "HDF-EOS5"
Format Type: "Native"
Format Description: "This is an EOSDIS specific format and it is also available in ASCII."
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"
Element Specification
Cardinality of Archive and Distribution Information:
Model | Element | Type | Usable Valid Values | Constraints | Required? | Cardinality | Notes |
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UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ Format | String | GCMD Granule Data Format vocabulary list | 1 - 80 characters | Yes | 1 | To ensure consistency, it is highly recommended that the format The format must be selected from the GCMD Granule Data Format vocabulary list. |
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/FormatType | String | Native Supported | n/a | No | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/FormatDescription | String | 1 - 80 characters | No | 0..1 | ||
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ AverageFileSize | Decimal | Yes, if TotalCollectionFileSizeBeginDate is used. | 0..1 | |||
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ AverageFileSizeUnit | String | KB MB GB TB PB NA | n/a | Yes, if AverageFileSize is used. | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSize | Decimal | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSizeUnit | Enumeration | KB MB GB TB PB NA | n/a | Yes, if TotalCollectionFileSize is used | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSizeBeginDate | Date | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-C | ArchiveAndDistributionInformation/ FileArchiveInformation/ Description | String | n/a | 1 - 1024 characters | No | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/Format | String | GCMD Granule Data Format vocabulary list | 1 - 80 characters | Yes | 1 | To ensure consistency, it is highly recommended that the format The format must be selected from the GCMD Granule Data Format vocabulary list. |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ FormatType | String | Native Supported | No | 0..1 | ||
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ FormatDescription | String | 1 - 80 characters | No | 0..1 | ||
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ Media | String | n/a | 1 - 80 characters | No | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ AverageFileSize | Decimal | n/a | n/a | Yes, if TotalCollectionFileSizeBeginDate is used. | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ AverageFileSizeUnit | Enumeration | KB MB GB TB PB NA | Yes, if AverageFileSize is used. | 0..1 | ||
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSize | Decimal | n/a | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSizeUnit | Enumeration | KB MB GB TB PB NA | n/a | Yes, if TotalCollectionFileSize is used | 0..1 | |
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSizeBeginDate | Date | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-C | ArchiveAndDistributionInformation/ FileDistributionInformation/ Description | String | n/a | 1 - 1024 characters | No | 0..1 | |
UMM-C | Fees | String | n/a | 1 - 255 characters | No | 0..1 |
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).
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ARC Automated Checks ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information. |
Dialect Mappings
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DIF 9 (Note: DIF-9 is being phased out and will no longer be supported after 2018) |
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DIF 10All of the sub-elements are optional in DIF 10.
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ECHO 10Only 2 UMM-C Archive and Distribution Information sub-elements map to ECHO 10, Data Format and Fees, and neither element is required.
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ISO 19115-2 MENDSArchive and Distribution Information is an optional metadata element in ISO 19115-2 MENDS.
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ISO 19115-2 SMAPArchive and Distribution Information does not currently map to ISO 19115-2 SMAP.
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UMM Migration
None
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Future Mappings
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History
UMM Versioning
Version | Date | What Changed |
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1.15.5 | 12/3/2020 | The description of the format elements now includes text about the controlled vocabulary for this field coming from KMS. |
1.15.4 | 9/18/2020 | No changes were made for Archive and Distribution Information during the transition from version 1.15.3 to 1.15.4 |
1.15.3 | 7/1/2020 | FormatDescription was added to FileArchive and FileDistribution Information types to version 1.15.3 |
1.15.2 | 5/20/2020 | No changes were made for Archive and Distribution Information during the transition from version 1.15.1 to 1.15.2 |
1.15.1 | 3/25/2020 | No changes were made for Archive and Distribution Information during the transition from version 1.15.0 to 1.15.1 |
1.15.0 | 2/26/2020 | No changes were made for Archive and Distribution Information during the transition from version 1.14.0 to 1.15.0 |
1.14.0 | 10/21/2019 | No changes were made for Archive and Distribution Information during the transition from version 1.13.0 to 1.14.0 |
1.13.0 | 04/11/2019 | This element was added to the UMM-C specification. |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 05/16/18 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space | |
1.1 | 04/12/21 | Moved "The data format provided is correct, however, it does not exactly match its entry in the GCMD Granule Data Format vocabulary list." from blue to red. GCMD keywords are now the authoritative controlled vocabulary source for data formats. | Jeanne' le Roux |