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

• extent
• (internetMediaType)
• (form)

Subelement <physicalDescription><extent>

Guidelines for use

Enter the number of pages in a paginated resource, or the dimensions of bibliographic or graphic materials. Avoid using symbols to denote units of measurement (e.g. 1"). Example values include number of photographs or an image's dimensions, or duration for A/V material. The element may be used with electronic resources, e.g. for digitized collection of slides, to show how many slides constitute the resource. Consult RDA or DACS standards for best practices. Follow your unit/collection guidelines per Supervisor/Collection Owner.

Attributes

Subelements

No subelements for extent.

XML Examples

<physicalDescription>
	<extent lang=”eng”>236 pages</extent>
</physicalDescription>

<physicalDescription>
	<extent lang=”eng”>18 X 24 inches</extent>
</physicalDescription>

<physicalDescription>
	<extent>56 min.</extent>
</physicalDescription>

Mappings

Dublin Core

Depending on the direction of mapping necessary, check

• DC to MODS: https://www.loc.gov/standards/mods/dcsimple-mods.html
• MODS to DC: http://www.loc.gov/standards/mods/mods-dcsimple.html

The following specific guidelines apply for the DAMS:

MARC 21

see http://www.loc.gov/standards/mods/mods-mapping.html#physicaldescription. The following specific guidelines apply for the DAMS:

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.