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The Responsibility element broadly defines responsibilities related to data resources using the position of the element in the metadata model hierarchy. The UMM-Common Profile defines five responsibilities: Metadata Contact, Resource Author / Originator, Point of Contact, Distributor, and Processor. Each of these responsibilities can have multiple people or organizations (termed parties) associated with it. A RoleCode that is chosen from the standard ISO Codelist describes details of the roles of those parties. See Individuals, Organizations, and Roles for more information.

The Tables below shows Click the links below to see how CMR metadata collections document contact information.  Select the tabs at the top of the sheet to see results for: Metadata Contact, Point of Contact, Resource Contact, Distributor Contact and Processor. Table 1:

Contact Information Exists in the CMR (Items, Elements and Attributes)

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Identifiers are also used to reference resources associated with the data set or service described by the metadata. For example platforms, instruments, software, documentation, reports, partners and products can all be unambiguously referenced and described with the MD_Identifier object.

The table below shows Click the links below to see where Identifiers are used in CMR metadata collections. Identifiers enable specific metadata concepts such platforms, instruments, Sensors, etc to be unambiguously identified. See Identifiers for more information.Table 2:

Identifier existence in the CMR (Elements)

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Citations are used to provide information about citing the resource being described in the metadata or to refer to resources outside of the metadata record. These citations are an important part of the identification information and, as such, they are in a special location in the record. In addition, they can provide connection to relevant materials that can not be included in the metadata.

The table below shows Click the links below to see where Citations are used in CMR metadata collections. See Citations for more information.Table 3:

Citation existence in the CMR (Elements)

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As the World Wide Web has developed into a ubiquitous information source, links to on-line information and services have become a critical element in all metadata records. As URLs have increased in complexity, it has become more important to provide supporting information along with the links. The ISO Standards use CI_OnlineResources to describe links. These include a rich set of attributes for describing on-line resources.

The table below shows Click the links below to see where Online Resource elements are used in CMR metadata collections.Table 4:

Online Resource existence in the CMR (Elements)

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The EX_Extent object is used for describing geographic extents in ISO metadata.  The EX_Extent object provides several options for describing geographic extents; Bounding Box, Bounding Polygon, Geographic Desciptions and Spatial Temporal Extents.

The table below shows Click the links below to see where geographic elements are used in CMR metadata collections.

Table 5:

Geographic Extent existence in the CMR (Elements)

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The EX_Extent object is used for describing temporal extents in ISO metadata.  In CMR metadata collections the gmi:TimePeriod element is most commonly used for describing temporal extents.  This TimePeriod element includes beginPositon and endPosition elements.  It's recommended that datasets which are ongoing use the indeterminatePosition='Now' attribute in the endPosition element.

The table below shows Click the links below to see where temporal elements are used in CMR metadata collections.Table 6:

Temporal Extent existence in the CMR (Elements)

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There are many dates included in the ISO Metadata Standards and they have several different types - each with its own characteristics.  The most common dates identified in CMR metadata collections include Metadata Creation/Revision date, Resource Citation date, Keyword Thesaurus date, Maintenance Update Frequency date, and Aggregation Information date. This Dates Wiki Page has information about valid formats for those dates.  Ron Lake's blog includes a helpful description of time in GML.

The table below shows Click the links below to see the usage of  Date elements are used in CMR metadata collections.

Table 7:

Date existence in the CMR (Elements)

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Keywords are words or phrases that describe the metadata resource.  They facilitate search, indexing and discovery of metadata, and are the largest single component of many metadata collections, regardless of the dialect.

The table below shows the usage of Click the links below to see how keyword elements are used in CMR metadata collections.

Table 8:

Keyword existence in the CMR (Elements)

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Descriptions are included in 14 ISO objects and are used for providing expanded free text documentation.  The Description fields most commonly used in CMR metadata collections are associated with Platforms  and Resource Citations.

The table below shows Click the links below to see to see the usage of Description elements in CMR metadata collections.

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