ibiblio Omeka Dublin Core metadata schema

Dublin Core

This document intends to delineate the schema for how Dublin Core fields on the ibiblio Omeka catalog should be filled out.

Not all fields are required but are encouraged. The online catalog will only display title, description, and identifier.

From Omeka:

“The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.”


Title: This is the title of the site as it will be displayed in the online catalog.

Subject: What the site is about briefly – keyword or phrase. 

Description: One paragraph description of the contents/function of the site. This will display in the online catalog.

Creator: Entity that created the site – person, organization, service.

Source: Source that this site is derived from. For example – if this is a software mirror, the original site would go here.

Publisher: Publisher is ibiblio

Date: Date created – may also be date added to ibiblio, but might not be.

Contributor: The entity (person, corporation) adding this site to this catalog.

Rights: At one point the field was used to track the order in which sites were added to this catalog. If you have a number in this field, leave it in there as the first entry and then add actual rights information after.

Ibiblio asks that all content be in the public domain. See Creative Commons Licenses https://creativecommons.org/licenses/ for information on how to restrict that somewhat.

Relation: Any related resources you’d like to share – books, other websites, articles, places, etc.

Format: File format – controlled vocabulary is the list of internal media types (MIME). If your site is a website it is most likely ‘text/html’. In the unlikely event that you are hosting just a pdf or just an image file it would be different. If uncertain, leave blank.

More info: https://www.iana.org/assignments/media-types/media-types.xhtml


Language: Language/s that the site is in. Can include more than one.

Type: From this controlled vocab: https://dublincore.org/specifications/dublin-core/dcmi-type-vocabulary/

Collection, dataset, event, image, InteractiveResource, MovingImage, PhysicalObject, Service, Software, Sound, StillImage, text

Identifier: The unambiguous identifier for you site is your URL – for example: http://distro.ibiblio.org/mint/ (this should already be filled out)

Coverage: Place geographically and/or place in time that this site covers. No controlled vocabulary.