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Element Description
The Identifier element holds different types of granule identifiers.
Best Practices
There are three sub-elements that comprise the Data Granule Identifiers:
- Identifier Type: The value for this field must be selected from a list of known identifier types. If the identifier is not included in the list, the enumeration value of '"Other' " may be selected, and the provider must specify the identifier's name. Available identifiers include:
- ProducerGranuleId
- LocalVersionId
- FeatureId
- CRID
- Other - select '"Other' " to provide an identifier not included in the list
- Identifier: The identifier value, e. E.g. the CRID value, FeatureId value, etc.
- Identifier Name: The name of the identifier. This field should only be populated if 'Other' is selected as the identifier type.
Examples:
Identifier Type: "ProducerGranuleId"
Identifier: "MERRA300.prod.assim.tavgU_3d_udt_Cp.200909.hdf"
Identifier Type: "CRID"
Identifier: "R16010"
Identifier Type: "Other"
Identifier: "2013_GR_NASA"
IdentifierName: "ThemeId"
Element Specification
Providing an Identifier is optional. More than 1 different type of identifier may be provided, but each type may only be used once (e.g. only one FeatureId may be provided, only one CRID may be provided, etc.) (Cardinality: 0..1).
Model | Element | Type | Usable Valid Values | Constraints | Required? | Cardinality | Notes |
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UMM-G | DataGranule/Identifiers/IdentifierType | Enumeration | ProducerGranuleId LocalVersionId FeatureId CRID Other | n/a | Yes, if applicable | 1 | Multiple Identifier Types may be provided, but each enumeration can only be used once in a granule record. |
UMM-G | DataGranule/Identifiers/Identifier | String | n/a | 1 - 1024 characters | Yes, if applicable | 1 | The actual value of the Identifier (e.g. the CRID value, FeatureId value, etc.) |
UMM-G | DataGranule/Identifiers/IdentifierName | String | n/a | 1 - 1024 characters | Only required if "Other" is selected as the IdentifierType | 0..1 | If "Other" is selected as the IdentifierType, then this field must be used to provide a name for the identifier. |
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 inter-agency and international data providers and are referred to as the International Directory Network (IDN).
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Please see the expandable sections below for flowchart details.
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ARC Automated Rules TBDChecks ARC uses the pyQuARC library for automated metadata checks. Please see the pyQuARC GitHub for more information. |
Dialect Mappings
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ECHO 10Providing a Producer Granule Id or Local Version Id is optional in ECHO 10. There are not special fields in ECHO 10 for CRID, FeatureId, or '"Other' " IDs. It is recommended that other types of granule identifiers be provided in the Additional Attributes metadata element in ECHO 10.
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ISO 19115-2 MENDSProviding Identifiers is optional in ISO (Cardinality: 0..1)
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ISO 19115-2 SMAPProviding Identifiers is optional in ISO (Cardinality: 0..1) Producer Granule Id is the only type of identifier currently supported in the ISO SMAP dialect.
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UMM Migration
N/A
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Future Mappings
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History
UMM Versioning
Version | Date | What Changed |
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1.6.0 | 11/4/2019 | Increase the length of Identifiers/Identifier and Identifiers/IdentifierName to 1024 |
1.5.0 | 01/30/2019 | No changes were made for Identifiers during the transition from version 1.4.0 to 1.5.0. |
1.4.0 |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 02/13/19 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space |