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Element Description
Represents Internet sites that contain information related to the data, as well as related Internet sites such as project home pages, related data archives/servers, metadata extensions, online software packages, web mapping services, and calibration/validation data.
Best Practices
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Examples:
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Element Specification
An unlimited amount of Related URLs may be listed (Cardinality: 10..*)
Model | Element | Type | Usable Valid Values | Constraints | Required? | Cardinality | Notes |
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UMM-Common | RelatedUrls/URL | String | n/a | 1 - 1024 characters | Yes | 1 | The GET DATA URL should point the user to a location where data files may be directly downloaded. |
UMM-Common | RelatedUrls/Description | String | n/a | 1 - 4000 characters | No | 0..1 | It is strongly recommended that a description be provided for each URL. |
UMM-Common | RelatedUrls/URLContentType | Enumeration | CollectionURL PublicationURL DataCenterURL DistributionURL DataContactURL VisualizationURL | n/a | Yes | 1 | "DistributionURL" is the only valid option for links used to obtain the data. |
UMM-Common | RelatedUrls/Type | String | KMS controlled | n/a | Yes | 1 | "GET DATA" should be provided as the Type. |
UMM-Common | RelatedUrls/Subtype | String | KMS controlled | n/a | No | 0..1 | The Type and Subtype are part of a keyword hierarchy specified in the KMS. Any Subtype listed get after GET DATA in the keyword list is a valid option. If none of the available Subtypes are appropriate for the URL, then it is okay to leave the Subtype field blank. |
UMM-Common | RelatedUrls/GetData/Format | String | KMS controlled | n/a | Yes | 1 | Are we keeping this field? The format of the data provided via the associated URL. |
UMM-Common | RelatedUrls/GetData/MimeType | String | KMS controlled | n/a | No | 0..1 | The mime type of the associated URL. |
UMM-Common | RelatedUrls/GetData/Size | Number | n/a | n/a | Yes | 1 | Really only makes sense to provide if the link is a direct download. Is this going to remain a required field? The size of the data obtained via the associated URL. |
UMM-Common | RelatedUrls/GetData/Unit | Enumeration | KB MB GB TB PB | n/a | Yes | 1 | Really only makes sense to provide if the link is a direct download. Is this going to remain a required field? Unit is required if information is provided in the 'Size' element. |
UMM-Common | RelatedUrls/GetData/Fees | String | n/a | 1 - 80 characters | No | 0..1 | The fee (if any) for ordering the data. The fee should be a number in U.S. dollars. |
UMM-Common | RelatedUrls/GetData/Checksum | String | n/a | 1 - 50 characters | No | 0..1 | Does it only make sense to provide a checksum if the link directly downloads a file? Or should you provide one if the link just takes you to another web page e.g. a 'data tree' type of page? Would like to provide some guidelines for when use of this field is encouraged. |
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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Please see the expandable sections below for flowchart details.
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ARC Automated Rules <insert> |
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 10 An unlimited amount of Related URLs may be listed (Cardinality: 0..*)
Example Mapping
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ECHO 10
Example Mapping
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ISO 19115-2 MENDS
Enumeration/Code List Mapping
Example Mapping
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ISO 19115-2 SMAP
Example Mapping
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UMM Migration
None
Future Mappings
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ISO 19115-1
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History
UMM Versioning
Version | Date | What Changed |
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1.10.0 | 5/2/2018 | <> |
1.9.0 |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 6/13/18 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space | Jeanne' le Roux |