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Element Description
Note: This wiki page is a draft/ work in progress
Data Dates is comprised of dates for when the data or resource itself changed in some way. This element is made of two sub-elements, type and date. The type describes what the date represents: a future review, when the resource was created, last updated, or planned for deletion. The date describes when the resource had an action performed on it or when the action will occur as described by the type element.
Best Practices
Each Data Date is accompanied by a Type. The Type must be selected from a controlled vocabulary list. There are four options available for Type:
- CREATE: The date the resource was created. This is typically the date the data set was published in the database
- UPDATE: The date the resource was last updated. This includes any change made to the data itself, such as a change in how the data is processed or a change in the file naming convention.
- REVIEW: The date of a planned future review of the resource.
- DELETE: The date the resource will be deleted.
The Creation, Last Revision, Future Review, and Planned Deletion dates exist in various places in the different standards.
All data dates have been consolidated under this element. They will be typed and will all be represented by the ISO 8601 date and time conventions as part of the reconciliation process.
Examples:
Type=CREATE Date: 2010-02-01
Type=UPDATE: Date: 2018-02-01
Type=REVIEW: Date: 2019-02-01
Element Specification
Model | Element | Type | Usable Valid Values | Constraints | Required? | Cardinality | Notes |
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UMM-C | DataDate/Type | Enumeration | CREATE UPDATE DELETE REVIEW | n/a | No | At least 1 is required | Dates related to activities involving the collection data. For example, Creation date is the date that the collection data first entered the data archive system. Type is chosen from a picklist. |
UMM-C | DataDate/Date | date-time | n/a | n/a | No | At least 1 is required | This is the date that an event associated with the collection or its metadata occurred. |
Value needed for translations:
The following value is needed by the CMR to translate older non UMM compliant records to and from the UMM and other supported specifications where non required elements are considered required but no valid is given. This is needed partly because the CMR still allows a non UMM compliant record to be ingested with warnings.
NOT PROVIDED - It is necessary for this value to exist so that the CMR can translate older non UMM compliant records into the latest UMM specification where CollectionProgress is required. This value should not be used by metadata providers.
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
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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
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ECHO 10
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ISO 19115-2 MENDS
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ISO 19115-2 SMAP
Example Mapping
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UMM Migration
UMM Version 1.9.0 | Translation Direction | UMM Version 1.10.0 |
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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 | No changes were made for Purpose during the transition from version 1.9.0 to 1.10.0 |
1.9.0 |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 10/5/18 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space | Jeanne' le Roux |