Gateway to Educational Materials (GEM)
DC Element
Label
DC Sub-Element
Label
Scheme
Description
Contributor 1 pixel 1 pixel A person or organization not specified in a CREATOR element who has made significant intellectual contributions to the resource but whose contribution is secondary to any person or organization specified in a CREATOR element (for example, editor, transcriber, and illustrator).

GATEWAY PROFILE NOTE: Not Allowed (At this time, The Gateway does not use the CONTRIBUTOR element. Instead, information regarding a contributor to the resource being described should be recorded using the ROLE sub-element of the CREATOR element.)

1 pixel namePersonal 1 pixel The name of the contributor when a contributor is an individual.
1 pixel nameCorporate   The name of the contributor when the contributor is a corporation, organization, or association.
  email   The email address of the contributor.
  postal   The postal address of the contributor.
  phone   The telephone number of the contributor. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  fax   The fax number of the contributor. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  affiliation   The institution where the contributor is based.
  homePage URL The URL of the contributor’s homepage on the WWW.
  role   Brief, free-text statement of the role of the contributor (e.g., “illustrator,” “photographer,” etc.).
Coverage     The spatial and/or temporal characteristics of the resource. Formal specification of COVERAGE is currently under development. Users and developers should understand that use of this element is currently considered to be experimental.
  spatial None/Varies The element value describes in free text some sort of spatial information relevant to the entity’s topic.
  temporal None/Varies The element value describes in free-test some sort of temporal information relevant to the entity's topic.
Creator 1 pixel 1 pixel The person or organization primarily responsible for creating the intellectual content of the resource. For example, authors in the case of written documents, artists, photographers, or illustrators in the case of visual resources.
1 pixel namePersonal 1 pixel The name of the creator when a creator is an individual.
1 pixel nameCorporate   The name of the creator when the contributor is a corporation, organization, or association.
  email   The email address of the creator.
  postal   The postal address of the creator.
  phone   The telephone number of the creator. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  fax   The fax number of the creator. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  affiliation   The institution where the creator is based.
  homePage URL The URL of the creator’s homepage on the WWW.
  role   Brief, free-text statement of the role of the creator (e.g., “author,” “photographer,” etc.).
Date   ISO8601 The date the resource was made available in its present form. Recommended best practice is an 8 digit number in the form YYYY-MM-DD as defined in http://www.w3.org/TR/NOTE-datetime, a profile of ISO 8601. In this scheme, the date element 1994-11-05 corresponds to November 5, 1994. Many other schema are possible, but if used, they should be identified in an unambiguous manner.
  type Varies/GEM The type of date selected from a controlled vocabulary; e.g., “recordCreated,” “creation,” “placedOnline,” “validFrom,” “validTo,” etc.

GEM NOTE: GEM provides a “best practice” controlled vocabulary of resource types.

Description     A textual description of the resource.
Format     The data format of the resource, used to identify the software and possibly hardware that might be needed to display or operate the resource. For the sake of interoperability, FORMAT should be selected from an enumerated list that is under development in the workshop series at the time of publication of this document.
  contentType IMT The file format (Internet Mime Type) of the resource being described.
  platform   Computing platform of the content.
  size   The size of the content file in bytes.
Identifier     String or number used to uniquely identify the resource. Examples for networked resources include URLs and URNs (when implemented). Other globally-unique identifiers,such as International Standard Book Numbers (ISBN) or other formal names would also be candidates for this element in the case of off-line resources.
  location Varies Any identifier that serves to locate the resource; or, a mechanism that resolves to a location where the resource may be found (e.g., a URL or a Dewey classification number denoting the location of a physical item on a shelf).
  publicID Varies Any publicly recognized designation that serves to uniquely identify the resource (e.g., ISBN, ISSN, etc.).
  SID GEM A unique identifier assigned by the GEM Consortium to a collection of resources in The Gateway.
  SDN Varies A Consortium member’s unique identifier for a specific resource in the Consortium member’s collection.
Language     Language(s) of the intellectual content of the resource. Where practical, the content of this field should coincide with RFC 1766.
  role GEM The role of the language designation selected from a controlled vocabulary; e.g., “Content” (language of the content of the resource), or “User” (language of the intended users).
  code Z39.53 The code value from the scheme representing the name of a written language.
  text Z39.53 The name of the written language spelled out in full.
Publisher 1 pixel 1 pixel The entity responsible for making the resource available in its present form, such as a publishing house, a university department, or a corporate entity.
1 pixel nameCorporate   The corporate name of the online provider/publisher of the resource.
1 pixel role GEM The role designation (either “onlineProvider” or “publisher”).
  email   The email address of the online provider/publisher of the resource.
  postal   The postal address of the online provider/publisher of the resource.
  phone   The telephone number of the online provider/publisher of the resource. This should be in the world standard format of Area Code-Local Number. For example, (737) 765-9876 or 707-765-9876.
  contact   The name of the contact person at the online provider/publisher of the resource.
  homePage URL The URL of the publisher’s homepage on the WWW.
Relation     The relationship of this resource to other resources. The intent of this element is to provide a means to express relationships among resources that have formal relationships to others, but exist as discrete resources themselves. For example, images in a document, chapters in a book, or items in a collection. Formal specification of RELATION is currently under development. Users and developers should understand that use of this element is currently considered to be experimental.
  kind Varies/GEM A machine-readable uni-term description of the kind of relationship the related resource has to the resource being cataloged (drawn from a GEM-registered controlled vocabulary (e.g., the relationship “isStandardsMappingOf” from GEM’s registered vocabulary)).

GEM NOTE: GEM provides a “best practice” controlled vocabulary of relationships.

  description   A simple, short textual description of the relationship including, where possible, the context of the relationship (e.g., “Standards mapping agency: MCREL”). The description may be used by an implementation as a human-readable hypertext link to the related resource.
  location Varies A location or a method that resolves to the location of the resource being pointed to (e.g., a URL, DDC or LCC number).
  publicID Varies Any publicly recognized designation that serves to uniquely identify the related resource (e.g., ISBN, ISSN, etc.)
Rights     A link to a copyright notice, to a rights-management statement, or to a service that would provide information about terms of access to the resource. Formal specification of RIGHTS is currently under development. Users and developers should understand that use of this element is currently considered to be experimental
  location Varies A location or a value that resolves to the location of some statement regarding intellectual property or other use restrictions placed on the resource (e.g., a URL).
  agent   The name of the agent of the owner(s) of rights in the resource.
  use   Statement of any intellectual property rights and/or use restrictions.
  priceCode Varies A code designating the fee status of the resource (e.g., free, fee-based).
Source     A string or number used to uniquely identify the work from which this resource was derived, if applicable. For example, a PDF version of a novel might have a SOURCE element containing an ISBN number for the physical book from which the PDF version was derived.

GATEWAY PROFILE NOTE: Not allowed (At this time, GEM does not use the SOURCE element. Instead, information regarding a resource from which the item being described was derived should be recorded using the RELATION element selecting "isSourceOf" KIND from the controlled vocabulary.)

  description   A brief textual description of the resource being described.
  version   The version number of the resource being described expressed as an integer or decimal value. Default version is “1”.
  location Varies A location or a method that resolves to the location of the source (e.g., a URL or a Dewey Classification number denoting the location of a physical item on a shelf).
  publicID Varies Any publicly recognized designation that serves to uniquely identify the related resource (e.g., ISBN, ISSN, FPI, SICI, etc.)
Subject     The topic of the resource. Typically, subject will be expressed as keywords or phrases that describe the subject or content of the resource. The use of controlled vocabularies and formal classification schemas is encouraged.
  subjectPath Varies/GEM Entry of a term or phrase from a controlled vocabulary or thesaurus.

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  sequence   Sequence of the term or phrase in the subjectPath (where applicable).
  keyword   Entry of a key terms or phrases drawn from the text of the resource (uncontrolled).
Title     The title of the work as provided by the author, publisher, or by the cataloger in the absence of an author/publisher-provided title.
Type   Varies The category of the resource, such as home page, novel, poem, working paper, technical report, essay, dictionary. For the sake of interoperability, TYPE should be selected from an enumerated list that is under development in the workshop series at the time of publication of this document. See http://sunsite.berkeley.edu/Metadata/types.html for current thinking on the application of this element

GEM NOTE: Description of the genre of the object being described selected from a GEM approved controlled vocabulary. Examples include a lesson plan or unit.


GEM Element
Label
GEM Sub-Element
Label
Scheme
Description
Audience     The element contains information from a controlled vocabulary that most closely identifies the specific audience of the resource being described.
  toolFor Varies/GEM The group that would use the resource (e.g., a teacher).

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  beneficiary Varies/GEM The target audience of the resource (e.g., learning disabled students).

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

Cataloging     Provides basic information about the agency that created the GEM catalog record.
  nameCorporate   The name of the cataloging agency.
  namePersonal   The name of the cataloger.
  email   The email address of the cataloging agency.
  postal   The postal address of the cataloging agency.
  phone   The telephone number of the cataloging agency. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  fax   The fax number of the cataloging agency. This should be in the world standard format of Area Code - Local Number. For example, (707) 876-9876 or 707-876-9876.
  homePage URL The URL of the cataloging agency's homepage on the WWW
  application   The application used to catalog the resource (e.g., GEMCat).
  version   The version number of the application that cataloged the resource e.g., 3.0).
Duration     The recommended time or number of sessions needed to do the activity/lesson as stated in the entity being described.
Resources     A brief free-text listing of materials essential to the successful use of the entity by the teacher as stated in the entity being described.
Level     Grade, grade span, educational level, or age of the entity’s audience.
  grade Varies/GEM Where the resource targets a specific grade or grade range.

GEM NOTE: GEM provides a US-centric “best practice” controlled vocabulary.

  level Varies/GEM Where the resource targets an educational level as opposed to a specific grade.

GEM NOTE: GEM provides a US-centric “best practice” controlled vocabulary.

  age [Integer/Integer Range] Where the resource targets a specifice age or age range.
Pedagogy     Denotes the student instructional groupings, teaching methods, assessment methods, and learning prerequisites of a resource.
  grouping Varies/GEM The designation of the student grouping(s) selected from a GEM-registered controlled vocabulary.

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  teachingMethod Varies/GEM The designation of the teaching method(s) selected from a GEM-registered controlled vocabulary.

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  assessment Varies/GEM The designation of the student assessment method(s) selected from a GEM-registered controlled vocabulary.

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  prerequisite   The free-text designation of a learning prerequisite.
Quality     The Quality Indicators element is a means for assessing the quality of instructional materials.
  criteria Varies/GEM Various criteria drawn from established evaluative schemes upon which the resource is evaluated and rated.

GEM NOTE: GEM provides a “best practice” controlled vocabulary.

  rating   The rating assigned a specific criteria.
  category GEM The textual rating (poor, fair, average, good, excellent).

GEM NOTE: GEM requires that when the QUALITY element is used, a general category must be selected from the GEM vocabulary regardless of any alternative schemes used for CRITERIA.

  authority   The name of the agency/person who did the quality evaluation.
  scale   Brief description of the scale used in evaluation (e.g., 1-5)
  homePage URL The URL of any online statement of the evaluating agency's use of the evaluation criteria.
Standards     State and/or national academic standards mapped to the entity being described.
  authority   The name of the agency/person that mapped the standard to the entity.
  correlation   A statement that identifies the degree to which the described materials correlate to the standard.

GEM NOTE: Correlation should be expressed in terms of the probability that an end user looking for resources that meet the specific standard would fine this particular resource useful (e.g., “.85”).

  identifier Varies If available, a coded representation of the standard as provided by the standard-making body.
  discipline Varies The topical area of the standard (e.g., Mathematics, Science, etc.) as provided by the standard-making body.
  level Varies The education level identified in the standard (which may or may not be coextensive with the grade or grade/level/age range of the resource being cataloged).
  standardPath Varies Official text of an individual taxon in the standardPath.
  sequence   Sequence of an individual taxon in the standardPath.