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Abstract

REQUIRED REPEATABLE MULTILINGUAL

MODS Element name: <subject><topic>

Short definition: Topic the described resource is about.

Input guidelines: At least one English topic term required. Use authority control if appropriate. Follow your unit/collection guidelines.

Definition

Topic the described resource is about.

DAMS input form fields

(Topic)

DAMS form field nameform field typerequiredMODS elementCollections Portal displaynotes
Subject - Topic Termtext fieldyessubject/topicTopic
Topic Term Languagetext fieldyes

subject[@lang]/topic

(attribute of subject)

N/AAt least one English ("eng") topic term required. For additional terms, enter the appropriate three-letter language code from ISO-639-2b language codes.

MODS Element description

Element <subject>

http://www.loc.gov/standards/mods/userguide/subject.html

Guidelines for use

<subject> is a container element that contains subelements relating to the subject aspect of the resource.

Attributes


Attribute name

Details

XPath syntax examples

lang

value:

At least one English ("eng") topic term required. For additional terms, enter the appropriate three-letter language code from ISO-639-2b language codes.

subject[@lang]

Subelements

The following subelements of <subject>are used in the DAMS:

  • topic
  • (temporal)
  • (geographic)
  • (hierarchicalGeographic)
  • (cartographics)
  • (geographicCode)

Subelement <subject><topic>

Guidelines for use

At least one English topic term required. Use authority control if appropriate. Follow your unit/collection guidelines.

Attributes

No attributes for <temporal> are currently implemented in the DAMS.

Subelements

No subelements for <topic>.

XML Examples

<subject lang="eng">
	<topic>Xeriscaping</topic>
</subject>

Mappings

Dublin Core

Depending on the direction of mapping necessary, check

MARC 21

see http://www.loc.gov/standards/mods/mods-mapping.html.

MARC 21 fieldMapping conditionMODS elementNotes
*
subject/topicDo not use the topic[@authority] attribute when mapping topic information.

Solr

In general, all MODS metadata is imported into the DAMS Solr server upon ingest. The ingest process generates Solr fields typically named according to the following schema:

mods_value*_suffix

where

  • value* can be one or multiple element, subelement or attribute names that allow to distinguish Solr fields
  • suffix is s, t, ss, ms or mt, which refers to the type of data stored in a Solr field and how it is indexed. The Solr index usually contains multiple copies of each field with the same content, distinguished by their suffix.

The following table shows mappings between MODS elements and Solr fields for those fields that are currently used for display in the Collections portal, or where additional processing happens in Islandora or during the publishing process. Suffixes are ignored, unless relevant for the mapping.

MODS elementMapping conditionSolr DAMSSolr Collections PortalNotes
subject/topic
mods_subject_temporalmods_subject_temporal
subject/topic
mods_subject_temporaldisplay_topic_msUsed to create facets on the Collections portal start page. The Solr field display_topic is generated by capitalizing the first letter of the first word for each topic value.
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