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.
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:
Cardinality of Archive and Distribution Information:
Model | Element | Type | Usable Valid Values | Constraints | Required? | Cardinality | Notes |
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UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ Format | String | 1 - 80 characters | Yes | 1 | ||
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/FormatType | String | Native Supported | n/a | No | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ AverageFileSize | Decimal | Yes, if TotalCollectionFileSizeBeginDate is used. | 0..1 | |||
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ AverageFileSizeUnit | String | KB MB GB TB PB NA | n/a | Yes, if AverageFileSize is used. | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSize | Decimal | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSizeUnit | Enumeration | KB MB GB TB PB NA | n/a | Yes, if TotalCollectionFileSize is used | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ TotalCollectionFileSizeBeginDate | Date | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-Common | ArchiveAndDistributionInformation/ FileArchiveInformation/ Description | String | n/a | 1 - 1024 characters | No | 0..1 | |
ArchiveAndDistributionInformation/ FileDistributionInformation/Format | String | 1 - 80 characters | Yes | 1 | |||
ArchiveAndDistributionInformation/ FileDistributionInformation/ FormatType | String | Native Supported | No | 0..1 | |||
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ Media | String | n/a | 1 - 80 characters | No | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ AverageFileSize | Decimal | n/a | n/a | Yes, if TotalCollectionFileSizeBeginDate is used. | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ AverageFileSizeUnit | Enumeration | KB MB GB TB PB NA | Yes, if AverageFileSize is used. | 0..1 | ||
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSize | Decimal | n/a | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | |
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSizeUnit | Enumeration | KB MB GB TB PB NA | n/a | Yes, if TotalCollectionFileSize is used | 0..1 | |
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ TotalCollectionFileSizeBeginDate | Date | No | 0..1 | Either use TotalCollectionFileSize or TotalCollectiopnFileSizeBeginDate | ||
UMM-Common | ArchiveAndDistributionInformation/ FileDistributionInformation/ Description | String | n/a | 1 - 1024 characters | No | 0..1 | |
UMM-Common | Fees | String | n/a | 1 - 255 characters | No | 0..1 |
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.
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ARC Automated Checks
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DIF 9 (Note: DIF-9 is being phased out and will no longer be supported after 2018) |
DIF 10Instrument is a required metadata element. At least 1 Instrument Keyword must be provided under each Platform. Multiple Instruments may be listed if necessary (Cardinality: 1..*). Providing instrument characteristics is optional. An unlimited amount of instrument characteristics may be specified for a particular instrument (Cardinality: 0..*). If instrument characteristics are provided, all 5 sub-fields (Name, Description, DataType, Unit, Value) are required.
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ECHO 10Only 2 UMM-C Archive and Distribution Information sub-elements map to ECHO 10, Data Format and Fees, and providing either sub-element is not required.
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ISO 19115-2 MENDSInstrument is an optional metadata element, however, it is strongly recommended that it be provided when possible. Multiple Instruments may be listed if necessary (Cardinality: 0..*). Providing instrument characteristics is optional. An unlimited amount of instrument characteristics may be specified for a particular instrument (Cardinality: 0..*). If instrument characteristics are provided, all 5 sub-fields (Name, Description, DataType, Unit, Value) are required.
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ISO 19115-2 SMAPInstrument is an optional metadata element, however, it is strongly recommended that it be provided when possible. Multiple Instruments may be listed if necessary (Cardinality: 0..*). Providing instrument characteristics is optional. An unlimited amount of instrument characteristics may be specified for a particular instrument (Cardinality: 0..*). If instrument characteristics are provided, all 5 sub-fields (Name, Description, DataType, Unit, Value) are required.
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None
Future Mappings
ISO 19115-1Instrument is an optional metadata element, however, it is strongly recommended that it be provided when possible. Multiple Instruments may be listed if necessary (Cardinality: 0..*). Providing instrument characteristics is optional. An unlimited amount of instrument characteristics may be specified for a particular instrument (Cardinality: 0..*). If instrument characteristics are provided, all 5 sub-fields (Name, Description, DataType, Unit, Value) are required.
Example Mapping
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Version | Date | What Changed |
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1.13.0 | 04/11/2019 | This element was added to the UMM-C specification. |
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 |